Finding the Fourth Proportional to 20,393,691.84, 28,143,882.95 and 11,101,863.92
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Solution
The fourth proportional to 20,393,691.84, 28,143,882.95 and 11,101,863.92 is: 15,320,892.41
Step by Step Solution
- Step 1: Write the proportion equation
20,393,691.84 : 28,143,882.95 = 11,101,863.92 : x - Step 2: Convert to fraction form
20,393,691.84/28,143,882.95 = 11,101,863.92/x - Step 3: Cross multiply
20,393,691.84x = 28,143,882.95 × 11,101,863.92 - Step 4: Simplify right side
20,393,691.84x = 312,449,558,495,079.44 - Step 5: Solve for x
x = 312,449,558,495,079.44/20,393,691.84 - Step 6: Final answer
x = 15,320,892.41
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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.