Finding the Fourth Proportional to 20,386,070.68, 28,132,781.64 and 11,218,713.40
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Solution
The fourth proportional to 20,386,070.68, 28,132,781.64 and 11,218,713.40 is: 15,481,826.75
Step by Step Solution
- Step 1: Write the proportion equation
20,386,070.68 : 28,132,781.64 = 11,218,713.40 : x - Step 2: Convert to fraction form
20,386,070.68/28,132,781.64 = 11,218,713.40/x - Step 3: Cross multiply
20,386,070.68x = 28,132,781.64 × 11,218,713.40 - Step 4: Simplify right side
20,386,070.68x = 315,613,614,363,942 - Step 5: Solve for x
x = 315,613,614,363,942/20,386,070.68 - Step 6: Final answer
x = 15,481,826.75
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.