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Finding the Fourth Proportional to 13.48, 18.65 and 11.11

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Solution

The fourth proportional to 13.48, 18.65 and 11.11 is: 15.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13.48 : 18.65 = 11.11 : x
  2. Step 2: Convert to fraction form
    13.48/18.65 = 11.11/x
  3. Step 3: Cross multiply
    13.48x = 18.65 × 11.11
  4. Step 4: Simplify right side
    13.48x = 207.15
  5. Step 5: Solve for x
    x = 207.15/13.48
  6. Step 6: Final answer
    x = 15.37

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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.