Home / 11,879.88-17,823.78-3,983.18

Finding the Fourth Proportional to 11,879.88, 17,823.78 and 3,983.18

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Solution

The fourth proportional to 11,879.88, 17,823.78 and 3,983.18 is: 5,976.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,879.88 : 17,823.78 = 3,983.18 : x
  2. Step 2: Convert to fraction form
    11,879.88/17,823.78 = 3,983.18/x
  3. Step 3: Cross multiply
    11,879.88x = 17,823.78 × 3,983.18
  4. Step 4: Simplify right side
    11,879.88x = 70,995,279.46
  5. Step 5: Solve for x
    x = 70,995,279.46/11,879.88
  6. Step 6: Final answer
    x = 5,976.09

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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.