Home / 31,000.92-42,781.33-16,853.66

Finding the Fourth Proportional to 31,000.92, 42,781.33 and 16,853.66

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Solution

The fourth proportional to 31,000.92, 42,781.33 and 16,853.66 is: 23,258.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,000.92 : 42,781.33 = 16,853.66 : x
  2. Step 2: Convert to fraction form
    31,000.92/42,781.33 = 16,853.66/x
  3. Step 3: Cross multiply
    31,000.92x = 42,781.33 × 16,853.66
  4. Step 4: Simplify right side
    31,000.92x = 721,021,990.17
  5. Step 5: Solve for x
    x = 721,021,990.17/31,000.92
  6. Step 6: Final answer
    x = 23,258.08

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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.