Home / 25,644.30-38,469.45-8,115.90

Finding the Fourth Proportional to 25,644.30, 38,469.45 and 8,115.90

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Solution

The fourth proportional to 25,644.30, 38,469.45 and 8,115.90 is: 12,174.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,644.30 : 38,469.45 = 8,115.90 : x
  2. Step 2: Convert to fraction form
    25,644.30/38,469.45 = 8,115.90/x
  3. Step 3: Cross multiply
    25,644.30x = 38,469.45 × 8,115.90
  4. Step 4: Simplify right side
    25,644.30x = 312,214,209.26
  5. Step 5: Solve for x
    x = 312,214,209.26/25,644.30
  6. Step 6: Final answer
    x = 12,174.80

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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.