Home / 31,120.38-42,946.11-17,691.27

Finding the Fourth Proportional to 31,120.38, 42,946.11 and 17,691.27

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Solution

The fourth proportional to 31,120.38, 42,946.11 and 17,691.27 is: 24,413.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,120.38 : 42,946.11 = 17,691.27 : x
  2. Step 2: Convert to fraction form
    31,120.38/42,946.11 = 17,691.27/x
  3. Step 3: Cross multiply
    31,120.38x = 42,946.11 × 17,691.27
  4. Step 4: Simplify right side
    31,120.38x = 759,771,227.46
  5. Step 5: Solve for x
    x = 759,771,227.46/31,120.38
  6. Step 6: Final answer
    x = 24,413.94

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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.