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Finding the Fourth Proportional to 10,939.80, 16,395.30 and 9,701.40

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Solution

The fourth proportional to 10,939.80, 16,395.30 and 9,701.40 is: 14,539.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,939.80 : 16,395.30 = 9,701.40 : x
  2. Step 2: Convert to fraction form
    10,939.80/16,395.30 = 9,701.40/x
  3. Step 3: Cross multiply
    10,939.80x = 16,395.30 × 9,701.40
  4. Step 4: Simplify right side
    10,939.80x = 159,057,363.42
  5. Step 5: Solve for x
    x = 159,057,363.42/10,939.80
  6. Step 6: Final answer
    x = 14,539.33

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