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Finding the Fourth Proportional to 13.32, 19.95 and 12.84

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Solution

The fourth proportional to 13.32, 19.95 and 12.84 is: 19.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13.32 : 19.95 = 12.84 : x
  2. Step 2: Convert to fraction form
    13.32/19.95 = 12.84/x
  3. Step 3: Cross multiply
    13.32x = 19.95 × 12.84
  4. Step 4: Simplify right side
    13.32x = 256.16
  5. Step 5: Solve for x
    x = 256.16/13.32
  6. Step 6: Final answer
    x = 19.23

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