Home / 10,358.30-15,537.45-3,431.90

Finding the Fourth Proportional to 10,358.30, 15,537.45 and 3,431.90

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Solution

The fourth proportional to 10,358.30, 15,537.45 and 3,431.90 is: 5,147.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,358.30 : 15,537.45 = 3,431.90 : x
  2. Step 2: Convert to fraction form
    10,358.30/15,537.45 = 3,431.90/x
  3. Step 3: Cross multiply
    10,358.30x = 15,537.45 × 3,431.90
  4. Step 4: Simplify right side
    10,358.30x = 53,322,974.66
  5. Step 5: Solve for x
    x = 53,322,974.66/10,358.30
  6. Step 6: Final answer
    x = 5,147.85

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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.