Home / 39,806.89-54,935.79-21,902.33

Finding the Fourth Proportional to 39,806.89, 54,935.79 and 21,902.33

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Solution

The fourth proportional to 39,806.89, 54,935.79 and 21,902.33 is: 30,226.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,806.89 : 54,935.79 = 21,902.33 : x
  2. Step 2: Convert to fraction form
    39,806.89/54,935.79 = 21,902.33/x
  3. Step 3: Cross multiply
    39,806.89x = 54,935.79 × 21,902.33
  4. Step 4: Simplify right side
    39,806.89x = 1,203,221,801.39
  5. Step 5: Solve for x
    x = 1,203,221,801.39/39,806.89
  6. Step 6: Final answer
    x = 30,226.47

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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.