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Finding the Fourth Proportional to 27,170.40, 40,664.88 and 15,480.48

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Solution

The fourth proportional to 27,170.40, 40,664.88 and 15,480.48 is: 23,169.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,170.40 : 40,664.88 = 15,480.48 : x
  2. Step 2: Convert to fraction form
    27,170.40/40,664.88 = 15,480.48/x
  3. Step 3: Cross multiply
    27,170.40x = 40,664.88 × 15,480.48
  4. Step 4: Simplify right side
    27,170.40x = 629,511,861.54
  5. Step 5: Solve for x
    x = 629,511,861.54/27,170.40
  6. Step 6: Final answer
    x = 23,169.03

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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.