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Finding the Fourth Proportional to 20,594.31, 28,422.39 and 11,522.97

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Solution

The fourth proportional to 20,594.31, 28,422.39 and 11,522.97 is: 15,902.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,594.31 : 28,422.39 = 11,522.97 : x
  2. Step 2: Convert to fraction form
    20,594.31/28,422.39 = 11,522.97/x
  3. Step 3: Cross multiply
    20,594.31x = 28,422.39 × 11,522.97
  4. Step 4: Simplify right side
    20,594.31x = 327,510,347.30
  5. Step 5: Solve for x
    x = 327,510,347.30/20,594.31
  6. Step 6: Final answer
    x = 15,902.95

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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.