Home / 10,387.28-15,569.72-5,039.13

Finding the Fourth Proportional to 10,387.28, 15,569.72 and 5,039.13

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Solution

The fourth proportional to 10,387.28, 15,569.72 and 5,039.13 is: 7,553.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,387.28 : 15,569.72 = 5,039.13 : x
  2. Step 2: Convert to fraction form
    10,387.28/15,569.72 = 5,039.13/x
  3. Step 3: Cross multiply
    10,387.28x = 15,569.72 × 5,039.13
  4. Step 4: Simplify right side
    10,387.28x = 78,457,843.14
  5. Step 5: Solve for x
    x = 78,457,843.14/10,387.28
  6. Step 6: Final answer
    x = 7,553.26

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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.