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Finding the Fourth Proportional to 13,918.10, 20,879.30 and 4,683.38

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Solution

The fourth proportional to 13,918.10, 20,879.30 and 4,683.38 is: 7,025.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,918.10 : 20,879.30 = 4,683.38 : x
  2. Step 2: Convert to fraction form
    13,918.10/20,879.30 = 4,683.38/x
  3. Step 3: Cross multiply
    13,918.10x = 20,879.30 × 4,683.38
  4. Step 4: Simplify right side
    13,918.10x = 97,785,696.03
  5. Step 5: Solve for x
    x = 97,785,696.03/13,918.10
  6. Step 6: Final answer
    x = 7,025.79

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