Home / 10,171.20-15,219.72-8,399.73

Finding the Fourth Proportional to 10,171.20, 15,219.72 and 8,399.73

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Solution

The fourth proportional to 10,171.20, 15,219.72 and 8,399.73 is: 12,568.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,171.20 : 15,219.72 = 8,399.73 : x
  2. Step 2: Convert to fraction form
    10,171.20/15,219.72 = 8,399.73/x
  3. Step 3: Cross multiply
    10,171.20x = 15,219.72 × 8,399.73
  4. Step 4: Simplify right side
    10,171.20x = 127,841,538.68
  5. Step 5: Solve for x
    x = 127,841,538.68/10,171.20
  6. Step 6: Final answer
    x = 12,568.97

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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.