Home / 13,760.28-20,640.36-3,372

Finding the Fourth Proportional to 13,760.28, 20,640.36 and 3,372

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Solution

The fourth proportional to 13,760.28, 20,640.36 and 3,372 is: 5,057.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,760.28 : 20,640.36 = 3,372 : x
  2. Step 2: Convert to fraction form
    13,760.28/20,640.36 = 3,372/x
  3. Step 3: Cross multiply
    13,760.28x = 20,640.36 × 3,372
  4. Step 4: Simplify right side
    13,760.28x = 69,599,293.92
  5. Step 5: Solve for x
    x = 69,599,293.92/13,760.28
  6. Step 6: Final answer
    x = 5,057.99

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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.