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Simplify 21:31
The simplified ratio of 21:31 is 21:31. Free ratio calculator with GCD breakdown.
21:31
GCD of 21 and 31 is 1. Simplified: 21/1 : 31/1 = 21:31
How This Was Calculated
Simplification: Divide both terms by their GCD.A:B = (A/GCD) : (B/GCD)
Solving proportions: A/B = C/D — cross-multiply to find the missing value.
Scaling: Multiply both terms by the scale factor.
Quick Reference Table
| Input | Result |
|---|---|
| 21 / 26 | 21:26 |
| 21 / 29 | 21:29 |
| 21 / 30 | 7:10 |
| 21 / 32 | 21:32 |
| 21 / 33 | 7:11 |
| 21 / 36 | 7:12 |
Frequently Asked Questions
What is a ratio?
A ratio compares two quantities by division.
How do I simplify a ratio?
Divide both numbers by their greatest common divisor (GCD).
Can ratios have decimal values?
Yes, but simplified ratios are typically expressed as whole numbers.