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Finding the Fourth Proportional to 18,747.85, 25,872.15 and 10,249.99

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Solution

The fourth proportional to 18,747.85, 25,872.15 and 10,249.99 is: 14,145.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,747.85 : 25,872.15 = 10,249.99 : x
  2. Step 2: Convert to fraction form
    18,747.85/25,872.15 = 10,249.99/x
  3. Step 3: Cross multiply
    18,747.85x = 25,872.15 × 10,249.99
  4. Step 4: Simplify right side
    18,747.85x = 265,189,278.78
  5. Step 5: Solve for x
    x = 265,189,278.78/18,747.85
  6. Step 6: Final answer
    x = 14,145.05

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