Finding the Fourth Proportional to 13,513,190.18, 18,647,972.02 and 7,318,186.58
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Solution
The fourth proportional to 13,513,190.18, 18,647,972.02 and 7,318,186.58 is: 10,098,972.69
Step by Step Solution
- Step 1: Write the proportion equation
13,513,190.18 : 18,647,972.02 = 7,318,186.58 : x - Step 2: Convert to fraction form
13,513,190.18/18,647,972.02 = 7,318,186.58/x - Step 3: Cross multiply
13,513,190.18x = 18,647,972.02 × 7,318,186.58 - Step 4: Simplify right side
13,513,190.18x = 136,469,338,580,979.48 - Step 5: Solve for x
x = 136,469,338,580,979.48/13,513,190.18 - Step 6: Final answer
x = 10,098,972.69
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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.