Home / 20,202.96-30,239.80-10,819.60

Finding the Fourth Proportional to 20,202.96, 30,239.80 and 10,819.60

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Solution

The fourth proportional to 20,202.96, 30,239.80 and 10,819.60 is: 16,194.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,202.96 : 30,239.80 = 10,819.60 : x
  2. Step 2: Convert to fraction form
    20,202.96/30,239.80 = 10,819.60/x
  3. Step 3: Cross multiply
    20,202.96x = 30,239.80 × 10,819.60
  4. Step 4: Simplify right side
    20,202.96x = 327,182,540.08
  5. Step 5: Solve for x
    x = 327,182,540.08/20,202.96
  6. Step 6: Final answer
    x = 16,194.78

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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.