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Finding the Fourth Proportional to 26.71, 40.11 and 15.89

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Solution

The fourth proportional to 26.71, 40.11 and 15.89 is: 23.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    26.71 : 40.11 = 15.89 : x
  2. Step 2: Convert to fraction form
    26.71/40.11 = 15.89/x
  3. Step 3: Cross multiply
    26.71x = 40.11 × 15.89
  4. Step 4: Simplify right side
    26.71x = 637.56
  5. Step 5: Solve for x
    x = 637.56/26.71
  6. Step 6: Final answer
    x = 23.87

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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.