Home / 31,209.40-43,044.78-18,620.92

Finding the Fourth Proportional to 31,209.40, 43,044.78 and 18,620.92

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Solution

The fourth proportional to 31,209.40, 43,044.78 and 18,620.92 is: 25,682.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,209.40 : 43,044.78 = 18,620.92 : x
  2. Step 2: Convert to fraction form
    31,209.40/43,044.78 = 18,620.92/x
  3. Step 3: Cross multiply
    31,209.40x = 43,044.78 × 18,620.92
  4. Step 4: Simplify right side
    31,209.40x = 801,533,404.80
  5. Step 5: Solve for x
    x = 801,533,404.80/31,209.40
  6. Step 6: Final answer
    x = 25,682.44

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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.