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Finding the Fourth Proportional to 13,182.89, 18,194.42 and 7,517.64

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Solution

The fourth proportional to 13,182.89, 18,194.42 and 7,517.64 is: 10,375.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,182.89 : 18,194.42 = 7,517.64 : x
  2. Step 2: Convert to fraction form
    13,182.89/18,194.42 = 7,517.64/x
  3. Step 3: Cross multiply
    13,182.89x = 18,194.42 × 7,517.64
  4. Step 4: Simplify right side
    13,182.89x = 136,779,186.59
  5. Step 5: Solve for x
    x = 136,779,186.59/13,182.89
  6. Step 6: Final answer
    x = 10,375.51

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.