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Finding the Fourth Proportional to 17,189.11, 25,786.90 and 12,246.49

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Solution

The fourth proportional to 17,189.11, 25,786.90 and 12,246.49 is: 18,372.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,189.11 : 25,786.90 = 12,246.49 : x
  2. Step 2: Convert to fraction form
    17,189.11/25,786.90 = 12,246.49/x
  3. Step 3: Cross multiply
    17,189.11x = 25,786.90 × 12,246.49
  4. Step 4: Simplify right side
    17,189.11x = 315,798,884.05
  5. Step 5: Solve for x
    x = 315,798,884.05/17,189.11
  6. Step 6: Final answer
    x = 18,372.04

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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.