Home / 11,819.40-17,731.20-3,922.39

Finding the Fourth Proportional to 11,819.40, 17,731.20 and 3,922.39

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Solution

The fourth proportional to 11,819.40, 17,731.20 and 3,922.39 is: 5,884.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,819.40 : 17,731.20 = 3,922.39 : x
  2. Step 2: Convert to fraction form
    11,819.40/17,731.20 = 3,922.39/x
  3. Step 3: Cross multiply
    11,819.40x = 17,731.20 × 3,922.39
  4. Step 4: Simplify right side
    11,819.40x = 69,548,596.64
  5. Step 5: Solve for x
    x = 69,548,596.64/11,819.40
  6. Step 6: Final answer
    x = 5,884.28

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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.