Home / 31,149.92-42,987.20-17,002.88

Finding the Fourth Proportional to 31,149.92, 42,987.20 and 17,002.88

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Solution

The fourth proportional to 31,149.92, 42,987.20 and 17,002.88 is: 23,464.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,149.92 : 42,987.20 = 17,002.88 : x
  2. Step 2: Convert to fraction form
    31,149.92/42,987.20 = 17,002.88/x
  3. Step 3: Cross multiply
    31,149.92x = 42,987.20 × 17,002.88
  4. Step 4: Simplify right side
    31,149.92x = 730,906,203.14
  5. Step 5: Solve for x
    x = 730,906,203.14/31,149.92
  6. Step 6: Final answer
    x = 23,464.14

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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.