Finding the Third Proportional to 21,522 and 31,581
Calculator
Solution
The third proportional to 21,522 and 31,581 is: 46,341.40
Step by Step Solution
- Step 1: Write the proportion equation
21,522 : 31,581 = 31,581 : x - Step 2: Convert to fraction form
21,522/31,581 = 31,581/x - Step 3: Cross multiply
21,522x = 31,581 × 31,581 - Step 4: Simplify right side
21,522x = 997,359,561 - Step 5: Solve for x
x = 997,359,561/21,522 - Step 6: Final answer
x = 46,341.40
Related Problems
Find third proportional to 10,761 and 15,790.50
Half scale
Find third proportional to 43,044 and 63,162
Double scale
Find third proportional to 21,524 and 31,584
Similar ratio
Find third proportional to 32,283 and 47,371.50
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.