Home / 33,331.20-49,929.60-20,812.80

Finding the Fourth Proportional to 33,331.20, 49,929.60 and 20,812.80

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Solution

The fourth proportional to 33,331.20, 49,929.60 and 20,812.80 is: 31,177.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,331.20 : 49,929.60 = 20,812.80 : x
  2. Step 2: Convert to fraction form
    33,331.20/49,929.60 = 20,812.80/x
  3. Step 3: Cross multiply
    33,331.20x = 49,929.60 × 20,812.80
  4. Step 4: Simplify right side
    33,331.20x = 1,039,174,778.88
  5. Step 5: Solve for x
    x = 1,039,174,778.88/33,331.20
  6. Step 6: Final answer
    x = 31,177.24

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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.