Home / 12,546.90-18,820.44-3,781.80

Finding the Fourth Proportional to 12,546.90, 18,820.44 and 3,781.80

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Solution

The fourth proportional to 12,546.90, 18,820.44 and 3,781.80 is: 5,672.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,546.90 : 18,820.44 = 3,781.80 : x
  2. Step 2: Convert to fraction form
    12,546.90/18,820.44 = 3,781.80/x
  3. Step 3: Cross multiply
    12,546.90x = 18,820.44 × 3,781.80
  4. Step 4: Simplify right side
    12,546.90x = 71,175,139.99
  5. Step 5: Solve for x
    x = 71,175,139.99/12,546.90
  6. Step 6: Final answer
    x = 5,672.73

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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.