Home / 13,385.28-20,078.96-3,524.42

Finding the Fourth Proportional to 13,385.28, 20,078.96 and 3,524.42

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Solution

The fourth proportional to 13,385.28, 20,078.96 and 3,524.42 is: 5,286.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,385.28 : 20,078.96 = 3,524.42 : x
  2. Step 2: Convert to fraction form
    13,385.28/20,078.96 = 3,524.42/x
  3. Step 3: Cross multiply
    13,385.28x = 20,078.96 × 3,524.42
  4. Step 4: Simplify right side
    13,385.28x = 70,766,688.20
  5. Step 5: Solve for x
    x = 70,766,688.20/13,385.28
  6. Step 6: Final answer
    x = 5,286.90

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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.