Finding the Fourth Proportional to 20,754,411.93, 31,128,425.55 and 6,921,613.08
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Solution
The fourth proportional to 20,754,411.93, 31,128,425.55 and 6,921,613.08 is: 10,381,354.97
Step by Step Solution
- Step 1: Write the proportion equation
20,754,411.93 : 31,128,425.55 = 6,921,613.08 : x - Step 2: Convert to fraction form
20,754,411.93/31,128,425.55 = 6,921,613.08/x - Step 3: Cross multiply
20,754,411.93x = 31,128,425.55 × 6,921,613.08 - Step 4: Simplify right side
20,754,411.93x = 215,458,917,446,686.19 - Step 5: Solve for x
x = 215,458,917,446,686.19/20,754,411.93 - Step 6: Final answer
x = 10,381,354.97
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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.