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Finding the Fourth Proportional to 13,399.94, 20,109.12 and 4,634.86

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Solution

The fourth proportional to 13,399.94, 20,109.12 and 4,634.86 is: 6,955.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,399.94 : 20,109.12 = 4,634.86 : x
  2. Step 2: Convert to fraction form
    13,399.94/20,109.12 = 4,634.86/x
  3. Step 3: Cross multiply
    13,399.94x = 20,109.12 × 4,634.86
  4. Step 4: Simplify right side
    13,399.94x = 93,202,955.92
  5. Step 5: Solve for x
    x = 93,202,955.92/13,399.94
  6. Step 6: Final answer
    x = 6,955.48

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