Home / 22,121.80-33,192.42-11,731

Finding the Fourth Proportional to 22,121.80, 33,192.42 and 11,731

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Solution

The fourth proportional to 22,121.80, 33,192.42 and 11,731 is: 17,601.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,121.80 : 33,192.42 = 11,731 : x
  2. Step 2: Convert to fraction form
    22,121.80/33,192.42 = 11,731/x
  3. Step 3: Cross multiply
    22,121.80x = 33,192.42 × 11,731
  4. Step 4: Simplify right side
    22,121.80x = 389,380,279.02
  5. Step 5: Solve for x
    x = 389,380,279.02/22,121.80
  6. Step 6: Final answer
    x = 17,601.65

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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.