Home / 36,321.82-50,128.80-20,406.30

Finding the Fourth Proportional to 36,321.82, 50,128.80 and 20,406.30

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Solution

The fourth proportional to 36,321.82, 50,128.80 and 20,406.30 is: 28,163.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,321.82 : 50,128.80 = 20,406.30 : x
  2. Step 2: Convert to fraction form
    36,321.82/50,128.80 = 20,406.30/x
  3. Step 3: Cross multiply
    36,321.82x = 50,128.80 × 20,406.30
  4. Step 4: Simplify right side
    36,321.82x = 1,022,943,331.44
  5. Step 5: Solve for x
    x = 1,022,943,331.44/36,321.82
  6. Step 6: Final answer
    x = 28,163.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.