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Finding the Fourth Proportional to 18,145.44, 25,040.40 and 10,692

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Solution

The fourth proportional to 18,145.44, 25,040.40 and 10,692 is: 14,754.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,145.44 : 25,040.40 = 10,692 : x
  2. Step 2: Convert to fraction form
    18,145.44/25,040.40 = 10,692/x
  3. Step 3: Cross multiply
    18,145.44x = 25,040.40 × 10,692
  4. Step 4: Simplify right side
    18,145.44x = 267,731,956.80
  5. Step 5: Solve for x
    x = 267,731,956.80/18,145.44
  6. Step 6: Final answer
    x = 14,754.78

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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.