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Finding the Fourth Proportional to 13,879.98, 20,826.81 and 6,484.95

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Solution

The fourth proportional to 13,879.98, 20,826.81 and 6,484.95 is: 9,730.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,879.98 : 20,826.81 = 6,484.95 : x
  2. Step 2: Convert to fraction form
    13,879.98/20,826.81 = 6,484.95/x
  3. Step 3: Cross multiply
    13,879.98x = 20,826.81 × 6,484.95
  4. Step 4: Simplify right side
    13,879.98x = 135,060,821.51
  5. Step 5: Solve for x
    x = 135,060,821.51/13,879.98
  6. Step 6: Final answer
    x = 9,730.62

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