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Finding the Fourth Proportional to 11.86, 17.74 and 9.00

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Solution

The fourth proportional to 11.86, 17.74 and 9.00 is: 13.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11.86 : 17.74 = 9.00 : x
  2. Step 2: Convert to fraction form
    11.86/17.74 = 9.00/x
  3. Step 3: Cross multiply
    11.86x = 17.74 × 9.00
  4. Step 4: Simplify right side
    11.86x = 159.62
  5. Step 5: Solve for x
    x = 159.62/11.86
  6. Step 6: Final answer
    x = 13.46

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