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Finding the Fourth Proportional to 12.61, 18.94 and 10.11

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Solution

The fourth proportional to 12.61, 18.94 and 10.11 is: 15.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12.61 : 18.94 = 10.11 : x
  2. Step 2: Convert to fraction form
    12.61/18.94 = 10.11/x
  3. Step 3: Cross multiply
    12.61x = 18.94 × 10.11
  4. Step 4: Simplify right side
    12.61x = 191.48
  5. Step 5: Solve for x
    x = 191.48/12.61
  6. Step 6: Final answer
    x = 15.19

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