Because the words express different ideas, choosing fourth or forth depends on meaning, not on regional spelling. Use fourth for the number four in an order, rank, date, or fraction. Use forth when you mean forward, onward, out into view, or one of several established expressions.
The words sound the same in standard American English, which makes the spelling easy to confuse. However, they are not interchangeable. A runner may finish fourth, while a speaker may step forth. Once you connect fourth with four and forth with forward, most sentences become simple to check.
Quick Answer
Use fourth for number four in a sequence: “She finished fourth in the race.” Use forth for forward movement or expressions such as “go forth” and “back and forth.” Therefore, when choosing fourth or forth, ask whether the sentence concerns numerical position or movement, progress, and presentation.
TL;DR
- Choose fourth for order, rank, dates, fractions, and number four.
- Choose forth for forward, onward, or out into view.
- Write fourth place, never forth place.
- Write back and forth, never back and fourth.
- Remember: four appears inside fourth; for begins forward and forth.
Fourth vs. Forth at a Glance
| Context | Correct Word | Grammar Role | Example |
| Number four in an order | Fourth | Ordinal adjective | This is my fourth attempt. |
| Finishing in position 4 | Fourth | Adverb | Our team finished fourth. |
| One of four equal parts | Fourth | Noun | She ate one fourth of the pie. |
| Moving forward or outward | Forth | Adverb | The hikers ventured forth. |
| Moving in opposite directions | Forth | Fixed expression | The pendulum swung back and forth. |
| Presenting or explaining something | Forth | Phrasal expression | The report sets forth the rules. |
| Producing or revealing something | Forth | Phrasal expression | Spring brings forth new leaves. |
What Is the Difference Between Fourth and Forth?
The difference between fourth or forth is clear: fourth relates to four, while forth relates to movement, continuation, or emergence. Both spellings are real words, but exchanging them changes the meaning or creates an error.
Fourth is the ordinal form connected with the cardinal number four. A cardinal number tells how many; an ordinal number tells which position. Therefore, four students describes quantity, while the fourth student identifies one position in a sequence.
By contrast, forth usually functions as an adverb meaning forward in time, place, or order.
The Merriam-Webster definition of forth
also includes coming out into notice or view. That sense appears in phrases such as “come forth” and “put forth an idea.”
Why Fourth and Forth Are Homophones
In addition, fourth and forth are homophones in standard American English. Homophones share a pronunciation but have different spellings or meanings.
The Oxford Learner’s Dictionaries entry for fourth
directly lists forth as its homophone.
Because both words sound like “FORTH,” listening cannot reveal the intended spelling. Therefore, context must do that work. A speaker who says “I came fourth” means position four. Someone who says “I came forth” means they appeared, stepped forward, or made themselves known.
The same problem occurs with other sound-alike pairs.
For example, cue and queue
share a pronunciation but perform different jobs. Therefore, base your spelling on meaning rather than sound.
When to Use Fourth for Order and Position
Use fourth when something comes after the third item in an ordered group. For example, the word may describe a person, place, chapter, attempt, floor, quarter, century, or other numbered position.
- Lina lives on the fourth floor.
- Please read the fourth chapter tonight.
- This is our fourth meeting this month.
- Marcus earned fourth place in the final.
- The fourth runner carried the blue baton.
You can also write the position as 4th, especially in lists, charts, informal notes, or space-limited displays. In continuous formal prose, the spelled-out form often reads more smoothly for small ordinal numbers. However, the preferred numeral style may depend on a school, publisher, or workplace guide.
Therefore, use a simple number test: if number four, 4th, or “after the third” preserves the meaning, choose fourth.
Fourth as an Adjective, Noun, and Adverb
In addition, fourth performs more than one grammatical job. Many short explanations call it only an adjective, but dictionaries also record noun and adverb uses.
As an adjective, it modifies a noun:
- The fourth question is difficult.
- We entered the fourth room.
As a noun, it names a position, a fraction, or another numbered entity:
- The package arrived on the fourth.
- Divide the sheet into fourths.
- Shift the car into fourth.
As an adverb, it tells where something ranks:
- The school finished fourth statewide.
- Ava placed fourth in the spelling contest.
Moreover, the Merriam-Webster entry for fourth
records these numerical meanings, including a series position, one of four equal parts, a musical interval, a gear, and the US holiday.
When to Use Forth for Forward Movement
Similarly, use forth when an action moves forward, onward, outward, or into view. The movement may involve place, time, public attention, or the development of something.
For physical or directional movement:
- The explorer ventured forth before sunrise.
- A volunteer stepped forth from the crowd.
- The water rushed forth through the opening.
For time or continuation:
- From that day forth, the office opened at eight.
- The rule remained in effect from June forth.
For emergence or presentation:
- The witness came forth with new information.
- The plant put forth fresh leaves.
- The committee put forth a practical proposal.
In every case, the basic idea moves something forward, outward, or into awareness. Fourth cannot replace forth in these sentences.
Is Forth Formal or Old-Fashioned?
However, forth can sound formal, literary, ceremonial, or old-fashioned when it appears alone, even though it remains correct. Therefore, in casual modern English, speakers often choose forward, onward, ahead, or a more specific verb instead.
Compare these pairs:
- Formal: The travelers went forth into the unknown.
- Natural everyday wording: The travelers moved forward.
- Formal: We must move forth with the plan.
- More natural workplace wording: We must move forward with the plan.
However, forth sounds completely natural inside established phrases such as back and forth, and so forth, set forth, and bring forth.
Merriam-Webster’s commonly confused words guide
similarly notes that the word appears especially in literary contexts and familiar expressions.
Back and Forth, And So Forth, Set Forth, and Bring Forth
In addition, several common expressions always use forth, not fourth:
- Back and forth means backward and forward or repeatedly between two sides.
- And so forth means “and other similar things” or “and the rest.”
- Set forth can mean begin a journey or present something clearly.
- Bring forth means produce, reveal, or give rise to something.
- Put forth means present an idea, make an effort, or produce growth.
- Hold forth means speak at length, often with confidence.
However, hyphenation depends on the phrase’s job. Write three open words when the phrase modifies an action: “The chair rocked back and forth.” Use back-and-forth as a noun or before another noun: “The long back-and-forth discussion delayed the vote.”
The American Heritage Dictionary entry for back and forth
records both the open adverb and the hyphenated noun or adjective.
Fourth in Dates, Fractions, Sports, Music, and Gears
Similarly, fourth extends beyond simple ranking because each use still connects with the number four.
- Date: The appointment is on the fourth of May.
- Holiday: We watched fireworks on the Fourth of July.
- Fraction: A fourth means one of four equal parts.
- Sports: The team scored in the fourth quarter.
- Music: The melody rises by a fourth.
- Vehicle: The driver shifted into fourth gear.
Capitalize Fourth in the official holiday name Fourth of July and in the shortened the Fourth when it means the US holiday. Use lowercase for ordinary dates and sequence positions: “the fourth day of July.”
For fractions, a fourth and one fourth both express 1/4. Many edited styles hyphenate a spelled-out fraction as one-fourth, especially when it modifies a noun, but exact hyphen rules can vary by style guide.
American and British English Use the Same Spellings
Likewise, American and British English use fourth for number-related meanings and forth for forward or outward meanings. These are not regional variants like color and colour. Therefore, changing the target audience does not change the core rule.
Vocabulary and style may still differ. For example, an American speaker may say a fourth where another speaker prefers a quarter. That variation does not make fourth uniquely American or incorrect elsewhere. Both expressions can name one of four equal parts.
Likewise, a British writer may use the literary word forth more or less often than an American writer. However, frequency and tone can vary while the meanings and standard spellings remain the same in both major varieties.
Common Fourth or Forth Mistakes
Because writers often spell the word by sound without checking its meaning, these errors remain common.
- Incorrect: She finished in forth place.
Correct: She finished in fourth place. - Incorrect: The boat moved back and fourth.
Correct: The boat moved back and forth. - Incorrect: Please read the forth paragraph.
Correct: Please read the fourth paragraph. - Incorrect: The policy is set fourth below.
Correct: The policy is set forth below. - Incorrect: He stepped fourth to answer.
Correct: He stepped forth to answer.
Typing from sound causes similar mistakes in phrases such as
A spell-checker may miss these errors because both individual words exist. Therefore, confirm the sentence’s intended meaning before accepting an automatic suggestion.
A Simple Three-Step Fourth or Forth Test
Use this test whenever the spelling interrupts your writing:
- Look for a number or position. If the sentence means four, 4th, a fraction, or after the third, choose fourth.
- Try “forward” or “outward.” If either replacement keeps the meaning, choose forth.
- Check for a fixed expression. Back and forth, and so forth, set forth, bring forth, put forth, and hold forth always use forth.
Two memory links make the decision even faster:
- Four → fourth
- Forward → forth
Meaning remains more dependable than appearance.
That method also works for discrete and discreet,
another pair whose matching sound cannot identify the correct spelling.
FAQs
Fourth place is correct because the phrase names position number four in a ranking. Forth means forward, onward, or out into view, so forth place does not express the intended numerical meaning.
Write back and forth when something moves, changes, or passes repeatedly between directions, positions, or people. Use the hyphenated form back-and-forth as a noun or adjective, as in “a back-and-forth exchange.” Back and fourth is incorrect.
Set forth is the correct expression. It can mean to begin a journey or to state, explain, and present something, as in “The contract sets forth the payment terms.” Set fourth would wrongly introduce a number-related word.
Capitalize Fourth of July when naming the US holiday. You may also write the Fourth with a capital letter when the holiday is clear from context. Use lowercase for an ordinary date or sequence, such as “the fourth day of the month.”
For example, fourth can perform all three roles. It modifies a noun in “the fourth chapter,” acts as a noun in “a fourth of the cake,” and works adverbially in “She finished fourth.” Each use retains a connection with number four.
No. By contrast, forth does not represent four, 4th, or a fraction. It usually means forward, onward, or out into view, and it appears in expressions such as “go forth,” “put forth,” and “and so forth.”
Conclusion
The correct choice between fourth or forth comes from meaning. Use fourth for number four, position, rank, dates, fractions, and other numerical ideas. Use forth for forward movement, emergence, continuation, or a fixed expression such as “back and forth.” Because the words sound alike, pronunciation cannot guide the spelling. Instead, apply the number test, the forward test, and the expression test. That short check will keep the words accurate in schoolwork, professional writing, emails, and everyday messages.
