Home / 13,489.28-18,615.42-7,824.52

Finding the Fourth Proportional to 13,489.28, 18,615.42 and 7,824.52

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Solution

The fourth proportional to 13,489.28, 18,615.42 and 7,824.52 is: 10,797.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,489.28 : 18,615.42 = 7,824.52 : x
  2. Step 2: Convert to fraction form
    13,489.28/18,615.42 = 7,824.52/x
  3. Step 3: Cross multiply
    13,489.28x = 18,615.42 × 7,824.52
  4. Step 4: Simplify right side
    13,489.28x = 145,656,726.10
  5. Step 5: Solve for x
    x = 145,656,726.10/13,489.28
  6. Step 6: Final answer
    x = 10,797.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.