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Finding the Fourth Proportional to 19.28, 28.92 and 11.32

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Solution

The fourth proportional to 19.28, 28.92 and 11.32 is: 16.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19.28 : 28.92 = 11.32 : x
  2. Step 2: Convert to fraction form
    19.28/28.92 = 11.32/x
  3. Step 3: Cross multiply
    19.28x = 28.92 × 11.32
  4. Step 4: Simplify right side
    19.28x = 327.37
  5. Step 5: Solve for x
    x = 327.37/19.28
  6. Step 6: Final answer
    x = 16.98

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