Home / 20,292.06-30,361.53-11,976.60

Finding the Fourth Proportional to 20,292.06, 30,361.53 and 11,976.60

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Solution

The fourth proportional to 20,292.06, 30,361.53 and 11,976.60 is: 17,919.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,292.06 : 30,361.53 = 11,976.60 : x
  2. Step 2: Convert to fraction form
    20,292.06/30,361.53 = 11,976.60/x
  3. Step 3: Cross multiply
    20,292.06x = 30,361.53 × 11,976.60
  4. Step 4: Simplify right side
    20,292.06x = 363,627,900.20
  5. Step 5: Solve for x
    x = 363,627,900.20/20,292.06
  6. Step 6: Final answer
    x = 17,919.71

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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.