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Finding the Fourth Proportional to 27,253.20, 40,872.78 and 9,720.48

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Solution

The fourth proportional to 27,253.20, 40,872.78 and 9,720.48 is: 14,578.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,253.20 : 40,872.78 = 9,720.48 : x
  2. Step 2: Convert to fraction form
    27,253.20/40,872.78 = 9,720.48/x
  3. Step 3: Cross multiply
    27,253.20x = 40,872.78 × 9,720.48
  4. Step 4: Simplify right side
    27,253.20x = 397,303,040.53
  5. Step 5: Solve for x
    x = 397,303,040.53/27,253.20
  6. Step 6: Final answer
    x = 14,578.22

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1.5x scale

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.