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Finding the Fourth Proportional to 16.77, 23.13 and 13.11

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Solution

The fourth proportional to 16.77, 23.13 and 13.11 is: 18.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    16.77 : 23.13 = 13.11 : x
  2. Step 2: Convert to fraction form
    16.77/23.13 = 13.11/x
  3. Step 3: Cross multiply
    16.77x = 23.13 × 13.11
  4. Step 4: Simplify right side
    16.77x = 303.23
  5. Step 5: Solve for x
    x = 303.23/16.77
  6. Step 6: Final answer
    x = 18.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.