Home / 10,351.13-15,531.25-5,424.30

Finding the Fourth Proportional to 10,351.13, 15,531.25 and 5,424.30

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Solution

The fourth proportional to 10,351.13, 15,531.25 and 5,424.30 is: 8,138.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,351.13 : 15,531.25 = 5,424.30 : x
  2. Step 2: Convert to fraction form
    10,351.13/15,531.25 = 5,424.30/x
  3. Step 3: Cross multiply
    10,351.13x = 15,531.25 × 5,424.30
  4. Step 4: Simplify right side
    10,351.13x = 84,246,159.38
  5. Step 5: Solve for x
    x = 84,246,159.38/10,351.13
  6. Step 6: Final answer
    x = 8,138.84

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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.