Home / 11,279.73-16,920-3,382.34

Finding the Fourth Proportional to 11,279.73, 16,920 and 3,382.34

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Solution

The fourth proportional to 11,279.73, 16,920 and 3,382.34 is: 5,073.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,279.73 : 16,920 = 3,382.34 : x
  2. Step 2: Convert to fraction form
    11,279.73/16,920 = 3,382.34/x
  3. Step 3: Cross multiply
    11,279.73x = 16,920 × 3,382.34
  4. Step 4: Simplify right side
    11,279.73x = 57,229,108.20
  5. Step 5: Solve for x
    x = 57,229,108.20/11,279.73
  6. Step 6: Final answer
    x = 5,073.62

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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.