Home / 11,819.39-17,731.20-3,922.38

Finding the Fourth Proportional to 11,819.39, 17,731.20 and 3,922.38

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Solution

The fourth proportional to 11,819.39, 17,731.20 and 3,922.38 is: 5,884.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,819.39 : 17,731.20 = 3,922.38 : x
  2. Step 2: Convert to fraction form
    11,819.39/17,731.20 = 3,922.38/x
  3. Step 3: Cross multiply
    11,819.39x = 17,731.20 × 3,922.38
  4. Step 4: Simplify right side
    11,819.39x = 69,548,504.26
  5. Step 5: Solve for x
    x = 69,548,504.26/11,819.39
  6. Step 6: Final answer
    x = 5,884.27

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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.