Home / 39,843.82-54,984.99-21,938.77

Finding the Fourth Proportional to 39,843.82, 54,984.99 and 21,938.77

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Solution

The fourth proportional to 39,843.82, 54,984.99 and 21,938.77 is: 30,275.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,843.82 : 54,984.99 = 21,938.77 : x
  2. Step 2: Convert to fraction form
    39,843.82/54,984.99 = 21,938.77/x
  3. Step 3: Cross multiply
    39,843.82x = 54,984.99 × 21,938.77
  4. Step 4: Simplify right side
    39,843.82x = 1,206,303,049.06
  5. Step 5: Solve for x
    x = 1,206,303,049.06/39,843.82
  6. Step 6: Final answer
    x = 30,275.79

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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.