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Finding the Fourth Proportional to 18,172.78, 25,076.25 and 10,104.41

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Solution

The fourth proportional to 18,172.78, 25,076.25 and 10,104.41 is: 13,942.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,172.78 : 25,076.25 = 10,104.41 : x
  2. Step 2: Convert to fraction form
    18,172.78/25,076.25 = 10,104.41/x
  3. Step 3: Cross multiply
    18,172.78x = 25,076.25 × 10,104.41
  4. Step 4: Simplify right side
    18,172.78x = 253,380,773.95
  5. Step 5: Solve for x
    x = 253,380,773.95/18,172.78
  6. Step 6: Final answer
    x = 13,942.88

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1.5x scale

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.