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Finding the Fourth Proportional to 18.36, 27.65 and 16.11

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Solution

The fourth proportional to 18.36, 27.65 and 16.11 is: 24.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18.36 : 27.65 = 16.11 : x
  2. Step 2: Convert to fraction form
    18.36/27.65 = 16.11/x
  3. Step 3: Cross multiply
    18.36x = 27.65 × 16.11
  4. Step 4: Simplify right side
    18.36x = 445.44
  5. Step 5: Solve for x
    x = 445.44/18.36
  6. Step 6: Final answer
    x = 24.26

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.