Home / 31,001.10-42,781.05-16,853.82

Finding the Fourth Proportional to 31,001.10, 42,781.05 and 16,853.82

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Solution

The fourth proportional to 31,001.10, 42,781.05 and 16,853.82 is: 23,258.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,001.10 : 42,781.05 = 16,853.82 : x
  2. Step 2: Convert to fraction form
    31,001.10/42,781.05 = 16,853.82/x
  3. Step 3: Cross multiply
    31,001.10x = 42,781.05 × 16,853.82
  4. Step 4: Simplify right side
    31,001.10x = 721,024,116.11
  5. Step 5: Solve for x
    x = 721,024,116.11/31,001.10
  6. Step 6: Final answer
    x = 23,258.02

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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.