Home / 14,221.20-21,333.10-3,691.20

Finding the Fourth Proportional to 14,221.20, 21,333.10 and 3,691.20

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Solution

The fourth proportional to 14,221.20, 21,333.10 and 3,691.20 is: 5,537.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,221.20 : 21,333.10 = 3,691.20 : x
  2. Step 2: Convert to fraction form
    14,221.20/21,333.10 = 3,691.20/x
  3. Step 3: Cross multiply
    14,221.20x = 21,333.10 × 3,691.20
  4. Step 4: Simplify right side
    14,221.20x = 78,744,738.72
  5. Step 5: Solve for x
    x = 78,744,738.72/14,221.20
  6. Step 6: Final answer
    x = 5,537.14

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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.