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Finding the Fourth Proportional to 21,874.91, 32,791.23 and 7,073.78

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Solution

The fourth proportional to 21,874.91, 32,791.23 and 7,073.78 is: 10,603.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,874.91 : 32,791.23 = 7,073.78 : x
  2. Step 2: Convert to fraction form
    21,874.91/32,791.23 = 7,073.78/x
  3. Step 3: Cross multiply
    21,874.91x = 32,791.23 × 7,073.78
  4. Step 4: Simplify right side
    21,874.91x = 231,957,782.99
  5. Step 5: Solve for x
    x = 231,957,782.99/21,874.91
  6. Step 6: Final answer
    x = 10,603.83

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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.