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Finding the Fourth Proportional to 25,719.62, 38,579.02 and 8,189.20

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Solution

The fourth proportional to 25,719.62, 38,579.02 and 8,189.20 is: 12,283.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,719.62 : 38,579.02 = 8,189.20 : x
  2. Step 2: Convert to fraction form
    25,719.62/38,579.02 = 8,189.20/x
  3. Step 3: Cross multiply
    25,719.62x = 38,579.02 × 8,189.20
  4. Step 4: Simplify right side
    25,719.62x = 315,931,310.58
  5. Step 5: Solve for x
    x = 315,931,310.58/25,719.62
  6. Step 6: Final answer
    x = 12,283.67

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