Home / 31,121.90-42,944.17-17,692.87

Finding the Fourth Proportional to 31,121.90, 42,944.17 and 17,692.87

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Solution

The fourth proportional to 31,121.90, 42,944.17 and 17,692.87 is: 24,413.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,121.90 : 42,944.17 = 17,692.87 : x
  2. Step 2: Convert to fraction form
    31,121.90/42,944.17 = 17,692.87/x
  3. Step 3: Cross multiply
    31,121.90x = 42,944.17 × 17,692.87
  4. Step 4: Simplify right side
    31,121.90x = 759,805,358.11
  5. Step 5: Solve for x
    x = 759,805,358.11/31,121.90
  6. Step 6: Final answer
    x = 24,413.85

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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.