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Finding the Fourth Proportional to 13,607.48, 20,409.18 and 6,489.92

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Solution

The fourth proportional to 13,607.48, 20,409.18 and 6,489.92 is: 9,733.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,607.48 : 20,409.18 = 6,489.92 : x
  2. Step 2: Convert to fraction form
    13,607.48/20,409.18 = 6,489.92/x
  3. Step 3: Cross multiply
    13,607.48x = 20,409.18 × 6,489.92
  4. Step 4: Simplify right side
    13,607.48x = 132,453,945.47
  5. Step 5: Solve for x
    x = 132,453,945.47/13,607.48
  6. Step 6: Final answer
    x = 9,733.91

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