Home / 12,645.80-18,968.68-3,761.09

Finding the Fourth Proportional to 12,645.80, 18,968.68 and 3,761.09

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Solution

The fourth proportional to 12,645.80, 18,968.68 and 3,761.09 is: 5,641.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,645.80 : 18,968.68 = 3,761.09 : x
  2. Step 2: Convert to fraction form
    12,645.80/18,968.68 = 3,761.09/x
  3. Step 3: Cross multiply
    12,645.80x = 18,968.68 × 3,761.09
  4. Step 4: Simplify right side
    12,645.80x = 71,342,906.99
  5. Step 5: Solve for x
    x = 71,342,906.99/12,645.80
  6. Step 6: Final answer
    x = 5,641.63

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Similar ratio
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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.