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Finding the Fourth Proportional to 18,630.57, 27,949.77 and 5,481.84

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Solution

The fourth proportional to 18,630.57, 27,949.77 and 5,481.84 is: 8,223.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,630.57 : 27,949.77 = 5,481.84 : x
  2. Step 2: Convert to fraction form
    18,630.57/27,949.77 = 5,481.84/x
  3. Step 3: Cross multiply
    18,630.57x = 27,949.77 × 5,481.84
  4. Step 4: Simplify right side
    18,630.57x = 153,216,167.18
  5. Step 5: Solve for x
    x = 153,216,167.18/18,630.57
  6. Step 6: Final answer
    x = 8,223.91

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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.