Home / 13,821.52-20,731.89-3,433.24

Finding the Fourth Proportional to 13,821.52, 20,731.89 and 3,433.24

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Solution

The fourth proportional to 13,821.52, 20,731.89 and 3,433.24 is: 5,149.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,821.52 : 20,731.89 = 3,433.24 : x
  2. Step 2: Convert to fraction form
    13,821.52/20,731.89 = 3,433.24/x
  3. Step 3: Cross multiply
    13,821.52x = 20,731.89 × 3,433.24
  4. Step 4: Simplify right side
    13,821.52x = 71,177,554.02
  5. Step 5: Solve for x
    x = 71,177,554.02/13,821.52
  6. Step 6: Final answer
    x = 5,149.76

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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.