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Finding the Fourth Proportional to 12,169.21, 18,250.03 and 5,149.10

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Solution

The fourth proportional to 12,169.21, 18,250.03 and 5,149.10 is: 7,722.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,169.21 : 18,250.03 = 5,149.10 : x
  2. Step 2: Convert to fraction form
    12,169.21/18,250.03 = 5,149.10/x
  3. Step 3: Cross multiply
    12,169.21x = 18,250.03 × 5,149.10
  4. Step 4: Simplify right side
    12,169.21x = 93,971,203.73
  5. Step 5: Solve for x
    x = 93,971,203.73/12,169.21
  6. Step 6: Final answer
    x = 7,722.05

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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.