Home / 14,845.92-20,487.36-8,131.78

Finding the Fourth Proportional to 14,845.92, 20,487.36 and 8,131.78

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Solution

The fourth proportional to 14,845.92, 20,487.36 and 8,131.78 is: 11,221.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,845.92 : 20,487.36 = 8,131.78 : x
  2. Step 2: Convert to fraction form
    14,845.92/20,487.36 = 8,131.78/x
  3. Step 3: Cross multiply
    14,845.92x = 20,487.36 × 8,131.78
  4. Step 4: Simplify right side
    14,845.92x = 166,598,704.30
  5. Step 5: Solve for x
    x = 166,598,704.30/14,845.92
  6. Step 6: Final answer
    x = 11,221.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.