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Finding the Fourth Proportional to 43.97, 65.91 and 19.93

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Solution

The fourth proportional to 43.97, 65.91 and 19.93 is: 29.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    43.97 : 65.91 = 19.93 : x
  2. Step 2: Convert to fraction form
    43.97/65.91 = 19.93/x
  3. Step 3: Cross multiply
    43.97x = 65.91 × 19.93
  4. Step 4: Simplify right side
    43.97x = 1,313.59
  5. Step 5: Solve for x
    x = 1,313.59/43.97
  6. Step 6: Final answer
    x = 29.87

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