Home / 20,144.46-30,216.60-7,661.55

Finding the Fourth Proportional to 20,144.46, 30,216.60 and 7,661.55

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Solution

The fourth proportional to 20,144.46, 30,216.60 and 7,661.55 is: 11,492.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,144.46 : 30,216.60 = 7,661.55 : x
  2. Step 2: Convert to fraction form
    20,144.46/30,216.60 = 7,661.55/x
  3. Step 3: Cross multiply
    20,144.46x = 30,216.60 × 7,661.55
  4. Step 4: Simplify right side
    20,144.46x = 231,505,991.73
  5. Step 5: Solve for x
    x = 231,505,991.73/20,144.46
  6. Step 6: Final answer
    x = 11,492.29

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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.