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Finding the Fourth Proportional to 14,251.76, 19,665.60 and 7,964.40

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Solution

The fourth proportional to 14,251.76, 19,665.60 and 7,964.40 is: 10,989.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,251.76 : 19,665.60 = 7,964.40 : x
  2. Step 2: Convert to fraction form
    14,251.76/19,665.60 = 7,964.40/x
  3. Step 3: Cross multiply
    14,251.76x = 19,665.60 × 7,964.40
  4. Step 4: Simplify right side
    14,251.76x = 156,624,704.64
  5. Step 5: Solve for x
    x = 156,624,704.64/14,251.76
  6. Step 6: Final answer
    x = 10,989.85

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