Home / 10,108.38-15,137.25-6,399.42

Finding the Fourth Proportional to 10,108.38, 15,137.25 and 6,399.42

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Solution

The fourth proportional to 10,108.38, 15,137.25 and 6,399.42 is: 9,583.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,108.38 : 15,137.25 = 6,399.42 : x
  2. Step 2: Convert to fraction form
    10,108.38/15,137.25 = 6,399.42/x
  3. Step 3: Cross multiply
    10,108.38x = 15,137.25 × 6,399.42
  4. Step 4: Simplify right side
    10,108.38x = 96,869,620.40
  5. Step 5: Solve for x
    x = 96,869,620.40/10,108.38
  6. Step 6: Final answer
    x = 9,583.10

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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.