Home / 10,786.48-16,179.26-3,390.78

Finding the Fourth Proportional to 10,786.48, 16,179.26 and 3,390.78

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Solution

The fourth proportional to 10,786.48, 16,179.26 and 3,390.78 is: 5,086.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,786.48 : 16,179.26 = 3,390.78 : x
  2. Step 2: Convert to fraction form
    10,786.48/16,179.26 = 3,390.78/x
  3. Step 3: Cross multiply
    10,786.48x = 16,179.26 × 3,390.78
  4. Step 4: Simplify right side
    10,786.48x = 54,860,311.22
  5. Step 5: Solve for x
    x = 54,860,311.22/10,786.48
  6. Step 6: Final answer
    x = 5,086.03

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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.