Home / 39,896.66-55,057.38-21,991.96

Finding the Fourth Proportional to 39,896.66, 55,057.38 and 21,991.96

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Solution

The fourth proportional to 39,896.66, 55,057.38 and 21,991.96 is: 30,348.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,896.66 : 55,057.38 = 21,991.96 : x
  2. Step 2: Convert to fraction form
    39,896.66/55,057.38 = 21,991.96/x
  3. Step 3: Cross multiply
    39,896.66x = 55,057.38 × 21,991.96
  4. Step 4: Simplify right side
    39,896.66x = 1,210,819,855.33
  5. Step 5: Solve for x
    x = 1,210,819,855.33/39,896.66
  6. Step 6: Final answer
    x = 30,348.90

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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.