Home / 20,181.09-30,229.94-11,835.97

Finding the Fourth Proportional to 20,181.09, 30,229.94 and 11,835.97

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Solution

The fourth proportional to 20,181.09, 30,229.94 and 11,835.97 is: 17,729.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,181.09 : 30,229.94 = 11,835.97 : x
  2. Step 2: Convert to fraction form
    20,181.09/30,229.94 = 11,835.97/x
  3. Step 3: Cross multiply
    20,181.09x = 30,229.94 × 11,835.97
  4. Step 4: Simplify right side
    20,181.09x = 357,800,662.94
  5. Step 5: Solve for x
    x = 357,800,662.94/20,181.09
  6. Step 6: Final answer
    x = 17,729.50

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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.