Home / 10,930.55-16,398.25-3,138.75

Finding the Fourth Proportional to 10,930.55, 16,398.25 and 3,138.75

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Solution

The fourth proportional to 10,930.55, 16,398.25 and 3,138.75 is: 4,708.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,930.55 : 16,398.25 = 3,138.75 : x
  2. Step 2: Convert to fraction form
    10,930.55/16,398.25 = 3,138.75/x
  3. Step 3: Cross multiply
    10,930.55x = 16,398.25 × 3,138.75
  4. Step 4: Simplify right side
    10,930.55x = 51,469,999.34
  5. Step 5: Solve for x
    x = 51,469,999.34/10,930.55
  6. Step 6: Final answer
    x = 4,708.82

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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.