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Finding the Fourth Proportional to 33,812.80, 50,719.20 and 10,439.20

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Solution

The fourth proportional to 33,812.80, 50,719.20 and 10,439.20 is: 15,658.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,812.80 : 50,719.20 = 10,439.20 : x
  2. Step 2: Convert to fraction form
    33,812.80/50,719.20 = 10,439.20/x
  3. Step 3: Cross multiply
    33,812.80x = 50,719.20 × 10,439.20
  4. Step 4: Simplify right side
    33,812.80x = 529,467,872.64
  5. Step 5: Solve for x
    x = 529,467,872.64/33,812.80
  6. Step 6: Final answer
    x = 15,658.80

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