Home / 11,945.20-17,913.30-3,622.78

Finding the Fourth Proportional to 11,945.20, 17,913.30 and 3,622.78

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Solution

The fourth proportional to 11,945.20, 17,913.30 and 3,622.78 is: 5,432.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,945.20 : 17,913.30 = 3,622.78 : x
  2. Step 2: Convert to fraction form
    11,945.20/17,913.30 = 3,622.78/x
  3. Step 3: Cross multiply
    11,945.20x = 17,913.30 × 3,622.78
  4. Step 4: Simplify right side
    11,945.20x = 64,895,944.97
  5. Step 5: Solve for x
    x = 64,895,944.97/11,945.20
  6. Step 6: Final answer
    x = 5,432.81

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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.