Home / 12,755.62-19,136.16-3,991.18

Finding the Fourth Proportional to 12,755.62, 19,136.16 and 3,991.18

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Solution

The fourth proportional to 12,755.62, 19,136.16 and 3,991.18 is: 5,987.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,755.62 : 19,136.16 = 3,991.18 : x
  2. Step 2: Convert to fraction form
    12,755.62/19,136.16 = 3,991.18/x
  3. Step 3: Cross multiply
    12,755.62x = 19,136.16 × 3,991.18
  4. Step 4: Simplify right side
    12,755.62x = 76,375,859.07
  5. Step 5: Solve for x
    x = 76,375,859.07/12,755.62
  6. Step 6: Final answer
    x = 5,987.62

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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.