Finding the Fourth Proportional to 19,984,377.38, 29,931,165.20 and 15,639,348.96
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Solution
The fourth proportional to 19,984,377.38, 29,931,165.20 and 15,639,348.96 is: 23,423,493.69
Step by Step Solution
- Step 1: Write the proportion equation
19,984,377.38 : 29,931,165.20 = 15,639,348.96 : x - Step 2: Convert to fraction form
19,984,377.38/29,931,165.20 = 15,639,348.96/x - Step 3: Cross multiply
19,984,377.38x = 29,931,165.20 × 15,639,348.96 - Step 4: Simplify right side
19,984,377.38x = 468,103,937,381,306.62 - Step 5: Solve for x
x = 468,103,937,381,306.62/19,984,377.38 - Step 6: Final answer
x = 23,423,493.69
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.