Home / 12,131.22-18,196.82-3,811.84

Finding the Fourth Proportional to 12,131.22, 18,196.82 and 3,811.84

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Solution

The fourth proportional to 12,131.22, 18,196.82 and 3,811.84 is: 5,717.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,131.22 : 18,196.82 = 3,811.84 : x
  2. Step 2: Convert to fraction form
    12,131.22/18,196.82 = 3,811.84/x
  3. Step 3: Cross multiply
    12,131.22x = 18,196.82 × 3,811.84
  4. Step 4: Simplify right side
    12,131.22x = 69,363,366.35
  5. Step 5: Solve for x
    x = 69,363,366.35/12,131.22
  6. Step 6: Final answer
    x = 5,717.76

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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.