Home / 14,813.39-20,440.19-8,439.18

Finding the Fourth Proportional to 14,813.39, 20,440.19 and 8,439.18

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Solution

The fourth proportional to 14,813.39, 20,440.19 and 8,439.18 is: 11,644.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,813.39 : 20,440.19 = 8,439.18 : x
  2. Step 2: Convert to fraction form
    14,813.39/20,440.19 = 8,439.18/x
  3. Step 3: Cross multiply
    14,813.39x = 20,440.19 × 8,439.18
  4. Step 4: Simplify right side
    14,813.39x = 172,498,387.09
  5. Step 5: Solve for x
    x = 172,498,387.09/14,813.39
  6. Step 6: Final answer
    x = 11,644.76

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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.