Home / 10,212.91-15,319.37-2,819.50

Finding the Fourth Proportional to 10,212.91, 15,319.37 and 2,819.50

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Solution

The fourth proportional to 10,212.91, 15,319.37 and 2,819.50 is: 4,229.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,212.91 : 15,319.37 = 2,819.50 : x
  2. Step 2: Convert to fraction form
    10,212.91/15,319.37 = 2,819.50/x
  3. Step 3: Cross multiply
    10,212.91x = 15,319.37 × 2,819.50
  4. Step 4: Simplify right side
    10,212.91x = 43,192,932.47
  5. Step 5: Solve for x
    x = 43,192,932.47/10,212.91
  6. Step 6: Final answer
    x = 4,229.25

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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.