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Finding the Fourth Proportional to 13,877.19, 20,823.93 and 5,118.21

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Solution

The fourth proportional to 13,877.19, 20,823.93 and 5,118.21 is: 7,680.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,877.19 : 20,823.93 = 5,118.21 : x
  2. Step 2: Convert to fraction form
    13,877.19/20,823.93 = 5,118.21/x
  3. Step 3: Cross multiply
    13,877.19x = 20,823.93 × 5,118.21
  4. Step 4: Simplify right side
    13,877.19x = 106,581,246.77
  5. Step 5: Solve for x
    x = 106,581,246.77/13,877.19
  6. Step 6: Final answer
    x = 7,680.32

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