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Finding the Fourth Proportional to 21,251.34, 29,326.23 and 11,691.19

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Solution

The fourth proportional to 21,251.34, 29,326.23 and 11,691.19 is: 16,133.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,251.34 : 29,326.23 = 11,691.19 : x
  2. Step 2: Convert to fraction form
    21,251.34/29,326.23 = 11,691.19/x
  3. Step 3: Cross multiply
    21,251.34x = 29,326.23 × 11,691.19
  4. Step 4: Simplify right side
    21,251.34x = 342,858,365.73
  5. Step 5: Solve for x
    x = 342,858,365.73/21,251.34
  6. Step 6: Final answer
    x = 16,133.50

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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.