Home / 31,276.38-43,162.20-17,129.20

Finding the Fourth Proportional to 31,276.38, 43,162.20 and 17,129.20

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Solution

The fourth proportional to 31,276.38, 43,162.20 and 17,129.20 is: 23,638.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,276.38 : 43,162.20 = 17,129.20 : x
  2. Step 2: Convert to fraction form
    31,276.38/43,162.20 = 17,129.20/x
  3. Step 3: Cross multiply
    31,276.38x = 43,162.20 × 17,129.20
  4. Step 4: Simplify right side
    31,276.38x = 739,333,956.24
  5. Step 5: Solve for x
    x = 739,333,956.24/31,276.38
  6. Step 6: Final answer
    x = 23,638.73

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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.