Home / 14,668.38-20,242.56-8,380.76

Finding the Fourth Proportional to 14,668.38, 20,242.56 and 8,380.76

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Solution

The fourth proportional to 14,668.38, 20,242.56 and 8,380.76 is: 11,565.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,668.38 : 20,242.56 = 8,380.76 : x
  2. Step 2: Convert to fraction form
    14,668.38/20,242.56 = 8,380.76/x
  3. Step 3: Cross multiply
    14,668.38x = 20,242.56 × 8,380.76
  4. Step 4: Simplify right side
    14,668.38x = 169,648,037.15
  5. Step 5: Solve for x
    x = 169,648,037.15/14,668.38
  6. Step 6: Final answer
    x = 11,565.56

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Half scale
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Double scale
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Similar ratio
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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.