Home / 39,806.36-54,934.10-21,902.68

Finding the Fourth Proportional to 39,806.36, 54,934.10 and 21,902.68

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Solution

The fourth proportional to 39,806.36, 54,934.10 and 21,902.68 is: 30,226.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,806.36 : 54,934.10 = 21,902.68 : x
  2. Step 2: Convert to fraction form
    39,806.36/54,934.10 = 21,902.68/x
  3. Step 3: Cross multiply
    39,806.36x = 54,934.10 × 21,902.68
  4. Step 4: Simplify right side
    39,806.36x = 1,203,204,013.39
  5. Step 5: Solve for x
    x = 1,203,204,013.39/39,806.36
  6. Step 6: Final answer
    x = 30,226.43

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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.