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Finding the Fourth Proportional to 18,729.24, 25,851.50 and 11,651.44

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Solution

The fourth proportional to 18,729.24, 25,851.50 and 11,651.44 is: 16,082.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,729.24 : 25,851.50 = 11,651.44 : x
  2. Step 2: Convert to fraction form
    18,729.24/25,851.50 = 11,651.44/x
  3. Step 3: Cross multiply
    18,729.24x = 25,851.50 × 11,651.44
  4. Step 4: Simplify right side
    18,729.24x = 301,207,201.16
  5. Step 5: Solve for x
    x = 301,207,201.16/18,729.24
  6. Step 6: Final answer
    x = 16,082.19

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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.