Finding the Fourth Proportional to 20,391,497.26, 28,120,705.61 and 13,700,959.92
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Solution
The fourth proportional to 20,391,497.26, 28,120,705.61 and 13,700,959.92 is: 18,894,182.00
Step by Step Solution
- Step 1: Write the proportion equation
20,391,497.26 : 28,120,705.61 = 13,700,959.92 : x - Step 2: Convert to fraction form
20,391,497.26/28,120,705.61 = 13,700,959.92/x - Step 3: Cross multiply
20,391,497.26x = 28,120,705.61 × 13,700,959.92 - Step 4: Simplify right side
20,391,497.26x = 385,280,660,416,224.38 - Step 5: Solve for x
x = 385,280,660,416,224.38/20,391,497.26 - Step 6: Final answer
x = 18,894,182.00
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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.