Finding the Third Proportional to 18,429.75 and 39,489.75
Calculator
Solution
The third proportional to 18,429.75 and 39,489.75 is: 84,615.38
Step by Step Solution
- Step 1: Write the proportion equation
18,429.75 : 39,489.75 = 39,489.75 : x - Step 2: Convert to fraction form
18,429.75/39,489.75 = 39,489.75/x - Step 3: Cross multiply
18,429.75x = 39,489.75 × 39,489.75 - Step 4: Simplify right side
18,429.75x = 1,559,440,355.06 - Step 5: Solve for x
x = 1,559,440,355.06/18,429.75 - Step 6: Final answer
x = 84,615.38
Related Problems
Find third proportional to 9,214.88 and 19,744.88
Half scale
Find third proportional to 36,859.50 and 78,979.50
Double scale
Find third proportional to 18,432 and 39,494
Similar ratio
Find third proportional to 27,644.63 and 59,234.63
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.