Home / 33,207.20-49,743.60-20,688.80

Finding the Fourth Proportional to 33,207.20, 49,743.60 and 20,688.80

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Solution

The fourth proportional to 33,207.20, 49,743.60 and 20,688.80 is: 30,991.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,207.20 : 49,743.60 = 20,688.80 : x
  2. Step 2: Convert to fraction form
    33,207.20/49,743.60 = 20,688.80/x
  3. Step 3: Cross multiply
    33,207.20x = 49,743.60 × 20,688.80
  4. Step 4: Simplify right side
    33,207.20x = 1,029,135,391.68
  5. Step 5: Solve for x
    x = 1,029,135,391.68/33,207.20
  6. Step 6: Final answer
    x = 30,991.33

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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.