Home / 14,757.12-20,321.28-13,184.64

Finding the Fourth Proportional to 14,757.12, 20,321.28 and 13,184.64

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Solution

The fourth proportional to 14,757.12, 20,321.28 and 13,184.64 is: 18,155.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,757.12 : 20,321.28 = 13,184.64 : x
  2. Step 2: Convert to fraction form
    14,757.12/20,321.28 = 13,184.64/x
  3. Step 3: Cross multiply
    14,757.12x = 20,321.28 × 13,184.64
  4. Step 4: Simplify right side
    14,757.12x = 267,928,761.14
  5. Step 5: Solve for x
    x = 267,928,761.14/14,757.12
  6. Step 6: Final answer
    x = 18,155.90

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1.5x scale

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.