Home / 31,000.57-42,781.11-16,853.42

Finding the Fourth Proportional to 31,000.57, 42,781.11 and 16,853.42

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Solution

The fourth proportional to 31,000.57, 42,781.11 and 16,853.42 is: 23,257.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,000.57 : 42,781.11 = 16,853.42 : x
  2. Step 2: Convert to fraction form
    31,000.57/42,781.11 = 16,853.42/x
  3. Step 3: Cross multiply
    31,000.57x = 42,781.11 × 16,853.42
  4. Step 4: Simplify right side
    31,000.57x = 721,007,912.81
  5. Step 5: Solve for x
    x = 721,007,912.81/31,000.57
  6. Step 6: Final answer
    x = 23,257.89

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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.