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Finding the Fourth Proportional to 26.02, 38.89 and 19.54

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Solution

The fourth proportional to 26.02, 38.89 and 19.54 is: 29.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    26.02 : 38.89 = 19.54 : x
  2. Step 2: Convert to fraction form
    26.02/38.89 = 19.54/x
  3. Step 3: Cross multiply
    26.02x = 38.89 × 19.54
  4. Step 4: Simplify right side
    26.02x = 760.01
  5. Step 5: Solve for x
    x = 760.01/26.02
  6. Step 6: Final answer
    x = 29.21

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.