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Finding the Fourth Proportional to 20,626.88, 28,462.92 and 11,672.96

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Solution

The fourth proportional to 20,626.88, 28,462.92 and 11,672.96 is: 16,107.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,626.88 : 28,462.92 = 11,672.96 : x
  2. Step 2: Convert to fraction form
    20,626.88/28,462.92 = 11,672.96/x
  3. Step 3: Cross multiply
    20,626.88x = 28,462.92 × 11,672.96
  4. Step 4: Simplify right side
    20,626.88x = 332,246,526.64
  5. Step 5: Solve for x
    x = 332,246,526.64/20,626.88
  6. Step 6: Final answer
    x = 16,107.45

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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.