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Finding the Fourth Proportional to 22.74, 34.14 and 11.93

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Solution

The fourth proportional to 22.74, 34.14 and 11.93 is: 17.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    22.74 : 34.14 = 11.93 : x
  2. Step 2: Convert to fraction form
    22.74/34.14 = 11.93/x
  3. Step 3: Cross multiply
    22.74x = 34.14 × 11.93
  4. Step 4: Simplify right side
    22.74x = 407.12
  5. Step 5: Solve for x
    x = 407.12/22.74
  6. Step 6: Final answer
    x = 17.90

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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.