Finding the Fourth Proportional to 10,915,961.96, 15,068,177.70 and 8,207,575.40
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Solution
The fourth proportional to 10,915,961.96, 15,068,177.70 and 8,207,575.40 is: 11,329,574.53
Step by Step Solution
- Step 1: Write the proportion equation
10,915,961.96 : 15,068,177.70 = 8,207,575.40 : x - Step 2: Convert to fraction form
10,915,961.96/15,068,177.70 = 8,207,575.40/x - Step 3: Cross multiply
10,915,961.96x = 15,068,177.70 × 8,207,575.40 - Step 4: Simplify right side
10,915,961.96x = 123,673,204,613,348.58 - Step 5: Solve for x
x = 123,673,204,613,348.58/10,915,961.96 - Step 6: Final answer
x = 11,329,574.53
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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.