Home / 13,728.28-20,592.42-3,867.56

Finding the Fourth Proportional to 13,728.28, 20,592.42 and 3,867.56

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Solution

The fourth proportional to 13,728.28, 20,592.42 and 3,867.56 is: 5,801.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,728.28 : 20,592.42 = 3,867.56 : x
  2. Step 2: Convert to fraction form
    13,728.28/20,592.42 = 3,867.56/x
  3. Step 3: Cross multiply
    13,728.28x = 20,592.42 × 3,867.56
  4. Step 4: Simplify right side
    13,728.28x = 79,642,419.90
  5. Step 5: Solve for x
    x = 79,642,419.90/13,728.28
  6. Step 6: Final answer
    x = 5,801.34

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1.5x scale

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.