Home / 31,001.09-42,781.97-16,853.95

Finding the Fourth Proportional to 31,001.09, 42,781.97 and 16,853.95

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Solution

The fourth proportional to 31,001.09, 42,781.97 and 16,853.95 is: 23,258.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,001.09 : 42,781.97 = 16,853.95 : x
  2. Step 2: Convert to fraction form
    31,001.09/42,781.97 = 16,853.95/x
  3. Step 3: Cross multiply
    31,001.09x = 42,781.97 × 16,853.95
  4. Step 4: Simplify right side
    31,001.09x = 721,045,183.28
  5. Step 5: Solve for x
    x = 721,045,183.28/31,001.09
  6. Step 6: Final answer
    x = 23,258.70

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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.