Home / 10,251.47-15,377.19-7,914.87

Finding the Fourth Proportional to 10,251.47, 15,377.19 and 7,914.87

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Solution

The fourth proportional to 10,251.47, 15,377.19 and 7,914.87 is: 11,872.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,251.47 : 15,377.19 = 7,914.87 : x
  2. Step 2: Convert to fraction form
    10,251.47/15,377.19 = 7,914.87/x
  3. Step 3: Cross multiply
    10,251.47x = 15,377.19 × 7,914.87
  4. Step 4: Simplify right side
    10,251.47x = 121,708,459.82
  5. Step 5: Solve for x
    x = 121,708,459.82/10,251.47
  6. Step 6: Final answer
    x = 11,872.29

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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.