Home / 12,169.70-18,257.78-3,849.86

Finding the Fourth Proportional to 12,169.70, 18,257.78 and 3,849.86

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Solution

The fourth proportional to 12,169.70, 18,257.78 and 3,849.86 is: 5,775.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,169.70 : 18,257.78 = 3,849.86 : x
  2. Step 2: Convert to fraction form
    12,169.70/18,257.78 = 3,849.86/x
  3. Step 3: Cross multiply
    12,169.70x = 18,257.78 × 3,849.86
  4. Step 4: Simplify right side
    12,169.70x = 70,289,786.37
  5. Step 5: Solve for x
    x = 70,289,786.37/12,169.70
  6. Step 6: Final answer
    x = 5,775.81

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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.