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Finding the Fourth Proportional to 14.76, 20.37 and 12.84

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Solution

The fourth proportional to 14.76, 20.37 and 12.84 is: 17.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    14.76 : 20.37 = 12.84 : x
  2. Step 2: Convert to fraction form
    14.76/20.37 = 12.84/x
  3. Step 3: Cross multiply
    14.76x = 20.37 × 12.84
  4. Step 4: Simplify right side
    14.76x = 261.45
  5. Step 5: Solve for x
    x = 261.45/14.76
  6. Step 6: Final answer
    x = 17.71

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