Home / 13,149.60-18,115.56-9,163.44

Finding the Fourth Proportional to 13,149.60, 18,115.56 and 9,163.44

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Solution

The fourth proportional to 13,149.60, 18,115.56 and 9,163.44 is: 12,624.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,149.60 : 18,115.56 = 9,163.44 : x
  2. Step 2: Convert to fraction form
    13,149.60/18,115.56 = 9,163.44/x
  3. Step 3: Cross multiply
    13,149.60x = 18,115.56 × 9,163.44
  4. Step 4: Simplify right side
    13,149.60x = 166,000,847.13
  5. Step 5: Solve for x
    x = 166,000,847.13/13,149.60
  6. Step 6: Final answer
    x = 12,624.02

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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.