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Finding the Fourth Proportional to 43.36, 65.05 and 12.93

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Solution

The fourth proportional to 43.36, 65.05 and 12.93 is: 19.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    43.36 : 65.05 = 12.93 : x
  2. Step 2: Convert to fraction form
    43.36/65.05 = 12.93/x
  3. Step 3: Cross multiply
    43.36x = 65.05 × 12.93
  4. Step 4: Simplify right side
    43.36x = 840.71
  5. Step 5: Solve for x
    x = 840.71/43.36
  6. Step 6: Final answer
    x = 19.39

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