Finding the Fourth Proportional to 18,318,648.46, 27,609,645.07 and 15,790,378.18
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Solution
The fourth proportional to 18,318,648.46, 27,609,645.07 and 15,790,378.18 is: 23,799,066.73
Step by Step Solution
- Step 1: Write the proportion equation
18,318,648.46 : 27,609,645.07 = 15,790,378.18 : x - Step 2: Convert to fraction form
18,318,648.46/27,609,645.07 = 15,790,378.18/x - Step 3: Cross multiply
18,318,648.46x = 27,609,645.07 × 15,790,378.18 - Step 4: Simplify right side
18,318,648.46x = 435,966,737,070,872.56 - Step 5: Solve for x
x = 435,966,737,070,872.56/18,318,648.46 - Step 6: Final answer
x = 23,799,066.73
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.