Home / 12,131.92-18,193.92-3,922

Finding the Fourth Proportional to 12,131.92, 18,193.92 and 3,922

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Solution

The fourth proportional to 12,131.92, 18,193.92 and 3,922 is: 5,881.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,131.92 : 18,193.92 = 3,922 : x
  2. Step 2: Convert to fraction form
    12,131.92/18,193.92 = 3,922/x
  3. Step 3: Cross multiply
    12,131.92x = 18,193.92 × 3,922
  4. Step 4: Simplify right side
    12,131.92x = 71,356,554.24
  5. Step 5: Solve for x
    x = 71,356,554.24/12,131.92
  6. Step 6: Final answer
    x = 5,881.72

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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.