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Finding the Fourth Proportional to 12,131.67, 18,197.52 and 3,366.59

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Solution

The fourth proportional to 12,131.67, 18,197.52 and 3,366.59 is: 5,049.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,131.67 : 18,197.52 = 3,366.59 : x
  2. Step 2: Convert to fraction form
    12,131.67/18,197.52 = 3,366.59/x
  3. Step 3: Cross multiply
    12,131.67x = 18,197.52 × 3,366.59
  4. Step 4: Simplify right side
    12,131.67x = 61,263,588.86
  5. Step 5: Solve for x
    x = 61,263,588.86/12,131.67
  6. Step 6: Final answer
    x = 5,049.89

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.