Home / 11,321.30-16,976.86-3,420.77

Finding the Fourth Proportional to 11,321.30, 16,976.86 and 3,420.77

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Solution

The fourth proportional to 11,321.30, 16,976.86 and 3,420.77 is: 5,129.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,321.30 : 16,976.86 = 3,420.77 : x
  2. Step 2: Convert to fraction form
    11,321.30/16,976.86 = 3,420.77/x
  3. Step 3: Cross multiply
    11,321.30x = 16,976.86 × 3,420.77
  4. Step 4: Simplify right side
    11,321.30x = 58,073,839.95
  5. Step 5: Solve for x
    x = 58,073,839.95/11,321.30
  6. Step 6: Final answer
    x = 5,129.61

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