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Finding the Fourth Proportional to 18,649.80, 27,965.01 and 5,500.44

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Solution

The fourth proportional to 18,649.80, 27,965.01 and 5,500.44 is: 8,247.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,649.80 : 27,965.01 = 5,500.44 : x
  2. Step 2: Convert to fraction form
    18,649.80/27,965.01 = 5,500.44/x
  3. Step 3: Cross multiply
    18,649.80x = 27,965.01 × 5,500.44
  4. Step 4: Simplify right side
    18,649.80x = 153,819,859.60
  5. Step 5: Solve for x
    x = 153,819,859.60/18,649.80
  6. Step 6: Final answer
    x = 8,247.80

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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.