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Finding the Fourth Proportional to 27,310.80, 40,915.80 and 15,589.20

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Solution

The fourth proportional to 27,310.80, 40,915.80 and 15,589.20 is: 23,355.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,310.80 : 40,915.80 = 15,589.20 : x
  2. Step 2: Convert to fraction form
    27,310.80/40,915.80 = 15,589.20/x
  3. Step 3: Cross multiply
    27,310.80x = 40,915.80 × 15,589.20
  4. Step 4: Simplify right side
    27,310.80x = 637,844,589.36
  5. Step 5: Solve for x
    x = 637,844,589.36/27,310.80
  6. Step 6: Final answer
    x = 23,355.03

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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.