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Finding the Fourth Proportional to 18,171, 25,076.52 and 10,719

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Solution

The fourth proportional to 18,171, 25,076.52 and 10,719 is: 14,792.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,171 : 25,076.52 = 10,719 : x
  2. Step 2: Convert to fraction form
    18,171/25,076.52 = 10,719/x
  3. Step 3: Cross multiply
    18,171x = 25,076.52 × 10,719
  4. Step 4: Simplify right side
    18,171x = 268,795,217.88
  5. Step 5: Solve for x
    x = 268,795,217.88/18,171
  6. Step 6: Final answer
    x = 14,792.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.