Home / 10,787.76-16,177.68-5,239.44

Finding the Fourth Proportional to 10,787.76, 16,177.68 and 5,239.44

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Solution

The fourth proportional to 10,787.76, 16,177.68 and 5,239.44 is: 7,857.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,787.76 : 16,177.68 = 5,239.44 : x
  2. Step 2: Convert to fraction form
    10,787.76/16,177.68 = 5,239.44/x
  3. Step 3: Cross multiply
    10,787.76x = 16,177.68 × 5,239.44
  4. Step 4: Simplify right side
    10,787.76x = 84,761,983.70
  5. Step 5: Solve for x
    x = 84,761,983.70/10,787.76
  6. Step 6: Final answer
    x = 7,857.24

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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.