Home / 39,821.44-54,957.27-21,920.08

Finding the Fourth Proportional to 39,821.44, 54,957.27 and 21,920.08

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Solution

The fourth proportional to 39,821.44, 54,957.27 and 21,920.08 is: 30,251.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,821.44 : 54,957.27 = 21,920.08 : x
  2. Step 2: Convert to fraction form
    39,821.44/54,957.27 = 21,920.08/x
  3. Step 3: Cross multiply
    39,821.44x = 54,957.27 × 21,920.08
  4. Step 4: Simplify right side
    39,821.44x = 1,204,667,754.98
  5. Step 5: Solve for x
    x = 1,204,667,754.98/39,821.44
  6. Step 6: Final answer
    x = 30,251.74

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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.