Home / 10,321.12-15,484.68-3,747.20

Finding the Fourth Proportional to 10,321.12, 15,484.68 and 3,747.20

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Solution

The fourth proportional to 10,321.12, 15,484.68 and 3,747.20 is: 5,621.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,321.12 : 15,484.68 = 3,747.20 : x
  2. Step 2: Convert to fraction form
    10,321.12/15,484.68 = 3,747.20/x
  3. Step 3: Cross multiply
    10,321.12x = 15,484.68 × 3,747.20
  4. Step 4: Simplify right side
    10,321.12x = 58,024,192.90
  5. Step 5: Solve for x
    x = 58,024,192.90/10,321.12
  6. Step 6: Final answer
    x = 5,621.89

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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.