Home / 10,786.43-16,179.74-3,390.73

Finding the Fourth Proportional to 10,786.43, 16,179.74 and 3,390.73

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Solution

The fourth proportional to 10,786.43, 16,179.74 and 3,390.73 is: 5,086.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,786.43 : 16,179.74 = 3,390.73 : x
  2. Step 2: Convert to fraction form
    10,786.43/16,179.74 = 3,390.73/x
  3. Step 3: Cross multiply
    10,786.43x = 16,179.74 × 3,390.73
  4. Step 4: Simplify right side
    10,786.43x = 54,861,129.81
  5. Step 5: Solve for x
    x = 54,861,129.81/10,786.43
  6. Step 6: Final answer
    x = 5,086.12

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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.