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Finding the Fourth Proportional to 26.44, 39.72 and 21.96

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Solution

The fourth proportional to 26.44, 39.72 and 21.96 is: 32.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    26.44 : 39.72 = 21.96 : x
  2. Step 2: Convert to fraction form
    26.44/39.72 = 21.96/x
  3. Step 3: Cross multiply
    26.44x = 39.72 × 21.96
  4. Step 4: Simplify right side
    26.44x = 872.25
  5. Step 5: Solve for x
    x = 872.25/26.44
  6. Step 6: Final answer
    x = 32.99

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.