Home / 31,508.92-43,469.58-20,175.40

Finding the Fourth Proportional to 31,508.92, 43,469.58 and 20,175.40

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Solution

The fourth proportional to 31,508.92, 43,469.58 and 20,175.40 is: 27,833.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,508.92 : 43,469.58 = 20,175.40 : x
  2. Step 2: Convert to fraction form
    31,508.92/43,469.58 = 20,175.40/x
  3. Step 3: Cross multiply
    31,508.92x = 43,469.58 × 20,175.40
  4. Step 4: Simplify right side
    31,508.92x = 877,016,164.33
  5. Step 5: Solve for x
    x = 877,016,164.33/31,508.92
  6. Step 6: Final answer
    x = 27,833.90

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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.