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Simplify 21:49
The simplified ratio of 21:49 is 3:7. Free ratio calculator with GCD breakdown.
3:7
GCD of 21 and 49 is 7. Simplified: 21/7 : 49/7 = 3:7
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 / 44 | 21:44 |
| 21 / 47 | 21:47 |
| 21 / 48 | 7:16 |
| 21 / 50 | 21:50 |
| 21 / 51 | 7:17 |
| 21 / 54 | 7:18 |
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.