Finding the Fourth Proportional to 15,700,291.92, 21,663,227.16 and 9,172,660.68
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Solution
The fourth proportional to 15,700,291.92, 21,663,227.16 and 9,172,660.68 is: 12,656,416.39
Step by Step Solution
- Step 1: Write the proportion equation
15,700,291.92 : 21,663,227.16 = 9,172,660.68 : x - Step 2: Convert to fraction form
15,700,291.92/21,663,227.16 = 9,172,660.68/x - Step 3: Cross multiply
15,700,291.92x = 21,663,227.16 × 9,172,660.68 - Step 4: Simplify right side
15,700,291.92x = 198,709,431,972,440.06 - Step 5: Solve for x
x = 198,709,431,972,440.06/15,700,291.92 - Step 6: Final answer
x = 12,656,416.39
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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.