Finding the Fourth Proportional to 15,781,423.14, 21,793,404.98 and 14,921,656.53
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Solution
The fourth proportional to 15,781,423.14, 21,793,404.98 and 14,921,656.53 is: 20,606,107.62
Step by Step Solution
- Step 1: Write the proportion equation
15,781,423.14 : 21,793,404.98 = 14,921,656.53 : x - Step 2: Convert to fraction form
15,781,423.14/21,793,404.98 = 14,921,656.53/x - Step 3: Cross multiply
15,781,423.14x = 21,793,404.98 × 14,921,656.53 - Step 4: Simplify right side
15,781,423.14x = 325,193,703,656,143.25 - Step 5: Solve for x
x = 325,193,703,656,143.25/15,781,423.14 - Step 6: Final answer
x = 20,606,107.62
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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.