Home / 18,819.47-28,231.14-6,340.88

Finding the Fourth Proportional to 18,819.47, 28,231.14 and 6,340.88

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Solution

The fourth proportional to 18,819.47, 28,231.14 and 6,340.88 is: 9,511.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,819.47 : 28,231.14 = 6,340.88 : x
  2. Step 2: Convert to fraction form
    18,819.47/28,231.14 = 6,340.88/x
  3. Step 3: Cross multiply
    18,819.47x = 28,231.14 × 6,340.88
  4. Step 4: Simplify right side
    18,819.47x = 179,010,129.85
  5. Step 5: Solve for x
    x = 179,010,129.85/18,819.47
  6. Step 6: Final answer
    x = 9,511.97

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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.