Home / 13,712.72-20,568.89-3,324.56

Finding the Fourth Proportional to 13,712.72, 20,568.89 and 3,324.56

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Solution

The fourth proportional to 13,712.72, 20,568.89 and 3,324.56 is: 4,986.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,712.72 : 20,568.89 = 3,324.56 : x
  2. Step 2: Convert to fraction form
    13,712.72/20,568.89 = 3,324.56/x
  3. Step 3: Cross multiply
    13,712.72x = 20,568.89 × 3,324.56
  4. Step 4: Simplify right side
    13,712.72x = 68,382,414.41
  5. Step 5: Solve for x
    x = 68,382,414.41/13,712.72
  6. Step 6: Final answer
    x = 4,986.79

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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.