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Finding the Fourth Proportional to 12,169.20, 18,239.77 and 5,498.50

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Solution

The fourth proportional to 12,169.20, 18,239.77 and 5,498.50 is: 8,241.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,169.20 : 18,239.77 = 5,498.50 : x
  2. Step 2: Convert to fraction form
    12,169.20/18,239.77 = 5,498.50/x
  3. Step 3: Cross multiply
    12,169.20x = 18,239.77 × 5,498.50
  4. Step 4: Simplify right side
    12,169.20x = 100,291,375.35
  5. Step 5: Solve for x
    x = 100,291,375.35/12,169.20
  6. Step 6: Final answer
    x = 8,241.41

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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.