Home / 10,179.20-15,270.62-5,247.51

Finding the Fourth Proportional to 10,179.20, 15,270.62 and 5,247.51

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Solution

The fourth proportional to 10,179.20, 15,270.62 and 5,247.51 is: 7,872.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,179.20 : 15,270.62 = 5,247.51 : x
  2. Step 2: Convert to fraction form
    10,179.20/15,270.62 = 5,247.51/x
  3. Step 3: Cross multiply
    10,179.20x = 15,270.62 × 5,247.51
  4. Step 4: Simplify right side
    10,179.20x = 80,132,704.92
  5. Step 5: Solve for x
    x = 80,132,704.92/10,179.20
  6. Step 6: Final answer
    x = 7,872.20

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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.