Home / 21,167.49-31,755.42-7,126.95

Finding the Fourth Proportional to 21,167.49, 31,755.42 and 7,126.95

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Solution

The fourth proportional to 21,167.49, 31,755.42 and 7,126.95 is: 10,691.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,167.49 : 31,755.42 = 7,126.95 : x
  2. Step 2: Convert to fraction form
    21,167.49/31,755.42 = 7,126.95/x
  3. Step 3: Cross multiply
    21,167.49x = 31,755.42 × 7,126.95
  4. Step 4: Simplify right side
    21,167.49x = 226,319,290.57
  5. Step 5: Solve for x
    x = 226,319,290.57/21,167.49
  6. Step 6: Final answer
    x = 10,691.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.