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Finding the Fourth Proportional to 18,627.66, 27,942.39 and 5,480.15

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Solution

The fourth proportional to 18,627.66, 27,942.39 and 5,480.15 is: 8,220.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,627.66 : 27,942.39 = 5,480.15 : x
  2. Step 2: Convert to fraction form
    18,627.66/27,942.39 = 5,480.15/x
  3. Step 3: Cross multiply
    18,627.66x = 27,942.39 × 5,480.15
  4. Step 4: Simplify right side
    18,627.66x = 153,128,348.85
  5. Step 5: Solve for x
    x = 153,128,348.85/18,627.66
  6. Step 6: Final answer
    x = 8,220.48

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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.