Home / 31,520.72-47,324.28-19,799.12

Finding the Fourth Proportional to 31,520.72, 47,324.28 and 19,799.12

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Solution

The fourth proportional to 31,520.72, 47,324.28 and 19,799.12 is: 29,725.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,520.72 : 47,324.28 = 19,799.12 : x
  2. Step 2: Convert to fraction form
    31,520.72/47,324.28 = 19,799.12/x
  3. Step 3: Cross multiply
    31,520.72x = 47,324.28 × 19,799.12
  4. Step 4: Simplify right side
    31,520.72x = 936,979,098.63
  5. Step 5: Solve for x
    x = 936,979,098.63/31,520.72
  6. Step 6: Final answer
    x = 29,725.82

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Similar ratio
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1.5x scale

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.