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Finding the Fourth Proportional to 13,149.43, 18,147.72 and 7,329.13

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Solution

The fourth proportional to 13,149.43, 18,147.72 and 7,329.13 is: 10,115.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,149.43 : 18,147.72 = 7,329.13 : x
  2. Step 2: Convert to fraction form
    13,149.43/18,147.72 = 7,329.13/x
  3. Step 3: Cross multiply
    13,149.43x = 18,147.72 × 7,329.13
  4. Step 4: Simplify right side
    13,149.43x = 133,006,999.08
  5. Step 5: Solve for x
    x = 133,006,999.08/13,149.43
  6. Step 6: Final answer
    x = 10,115.04

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.