Home / 11,211.76-16,819.49-3,418.75

Finding the Fourth Proportional to 11,211.76, 16,819.49 and 3,418.75

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Solution

The fourth proportional to 11,211.76, 16,819.49 and 3,418.75 is: 5,128.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,211.76 : 16,819.49 = 3,418.75 : x
  2. Step 2: Convert to fraction form
    11,211.76/16,819.49 = 3,418.75/x
  3. Step 3: Cross multiply
    11,211.76x = 16,819.49 × 3,418.75
  4. Step 4: Simplify right side
    11,211.76x = 57,501,631.44
  5. Step 5: Solve for x
    x = 57,501,631.44/11,211.76
  6. Step 6: Final answer
    x = 5,128.69

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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.