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Simplify 72:20
The simplified ratio of 72:20 is 18:5. Free ratio calculator with GCD breakdown.
18:5
GCD of 72 and 20 is 4. Simplified: 72/4 : 20/4 = 18:5
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 |
|---|---|
| 72 / 15 | 24:5 |
| 72 / 18 | 4:1 |
| 72 / 19 | 72:19 |
| 72 / 21 | 24:7 |
| 72 / 22 | 36:11 |
| 72 / 25 | 72:25 |
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.