Finding the Fourth Proportional to 12,636,121.87, 17,436,349.62 and 7,129,175.68
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Solution
The fourth proportional to 12,636,121.87, 17,436,349.62 and 7,129,175.68 is: 9,837,416.97
Step by Step Solution
- Step 1: Write the proportion equation
12,636,121.87 : 17,436,349.62 = 7,129,175.68 : x - Step 2: Convert to fraction form
12,636,121.87/17,436,349.62 = 7,129,175.68/x - Step 3: Cross multiply
12,636,121.87x = 17,436,349.62 × 7,129,175.68 - Step 4: Simplify right side
12,636,121.87x = 124,306,799,658,881.25 - Step 5: Solve for x
x = 124,306,799,658,881.25/12,636,121.87 - Step 6: Final answer
x = 9,837,416.97
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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.