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Finding the Fourth Proportional to 26.94, 40.38 and 21.90

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Solution

The fourth proportional to 26.94, 40.38 and 21.90 is: 32.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    26.94 : 40.38 = 21.90 : x
  2. Step 2: Convert to fraction form
    26.94/40.38 = 21.90/x
  3. Step 3: Cross multiply
    26.94x = 40.38 × 21.90
  4. Step 4: Simplify right side
    26.94x = 884.32
  5. Step 5: Solve for x
    x = 884.32/26.94
  6. Step 6: Final answer
    x = 32.83

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Why These Related Problems?

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