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Finding the Fourth Proportional to 12,943.49, 17,840.50 and 9,161.80

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Solution

The fourth proportional to 12,943.49, 17,840.50 and 9,161.80 is: 12,628.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,943.49 : 17,840.50 = 9,161.80 : x
  2. Step 2: Convert to fraction form
    12,943.49/17,840.50 = 9,161.80/x
  3. Step 3: Cross multiply
    12,943.49x = 17,840.50 × 9,161.80
  4. Step 4: Simplify right side
    12,943.49x = 163,451,092.90
  5. Step 5: Solve for x
    x = 163,451,092.90/12,943.49
  6. Step 6: Final answer
    x = 12,628.06

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