Home / 31,001.20-42,781.97-16,854.35

Finding the Fourth Proportional to 31,001.20, 42,781.97 and 16,854.35

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Solution

The fourth proportional to 31,001.20, 42,781.97 and 16,854.35 is: 23,259.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,001.20 : 42,781.97 = 16,854.35 : x
  2. Step 2: Convert to fraction form
    31,001.20/42,781.97 = 16,854.35/x
  3. Step 3: Cross multiply
    31,001.20x = 42,781.97 × 16,854.35
  4. Step 4: Simplify right side
    31,001.20x = 721,062,124.30
  5. Step 5: Solve for x
    x = 721,062,124.30/31,001.20
  6. Step 6: Final answer
    x = 23,259.17

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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.