Home / 22,013.10-32,976.45-13,221.90

Finding the Fourth Proportional to 22,013.10, 32,976.45 and 13,221.90

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Solution

The fourth proportional to 22,013.10, 32,976.45 and 13,221.90 is: 19,806.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,013.10 : 32,976.45 = 13,221.90 : x
  2. Step 2: Convert to fraction form
    22,013.10/32,976.45 = 13,221.90/x
  3. Step 3: Cross multiply
    22,013.10x = 32,976.45 × 13,221.90
  4. Step 4: Simplify right side
    22,013.10x = 436,011,324.26
  5. Step 5: Solve for x
    x = 436,011,324.26/22,013.10
  6. Step 6: Final answer
    x = 19,806.90

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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.