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Finding the Fourth Proportional to 10,939.56, 16,405.29 and 3,918.48

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Solution

The fourth proportional to 10,939.56, 16,405.29 and 3,918.48 is: 5,876.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,939.56 : 16,405.29 = 3,918.48 : x
  2. Step 2: Convert to fraction form
    10,939.56/16,405.29 = 3,918.48/x
  3. Step 3: Cross multiply
    10,939.56x = 16,405.29 × 3,918.48
  4. Step 4: Simplify right side
    10,939.56x = 64,283,800.76
  5. Step 5: Solve for x
    x = 64,283,800.76/10,939.56
  6. Step 6: Final answer
    x = 5,876.27

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