Home / 25,387.20-38,072.40-8,744.40

Finding the Fourth Proportional to 25,387.20, 38,072.40 and 8,744.40

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Solution

The fourth proportional to 25,387.20, 38,072.40 and 8,744.40 is: 13,113.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,387.20 : 38,072.40 = 8,744.40 : x
  2. Step 2: Convert to fraction form
    25,387.20/38,072.40 = 8,744.40/x
  3. Step 3: Cross multiply
    25,387.20x = 38,072.40 × 8,744.40
  4. Step 4: Simplify right side
    25,387.20x = 332,920,294.56
  5. Step 5: Solve for x
    x = 332,920,294.56/25,387.20
  6. Step 6: Final answer
    x = 13,113.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.