Home / 39,286.97-54,215.85-21,381.97

Finding the Fourth Proportional to 39,286.97, 54,215.85 and 21,381.97

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Solution

The fourth proportional to 39,286.97, 54,215.85 and 21,381.97 is: 29,507.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,286.97 : 54,215.85 = 21,381.97 : x
  2. Step 2: Convert to fraction form
    39,286.97/54,215.85 = 21,381.97/x
  3. Step 3: Cross multiply
    39,286.97x = 54,215.85 × 21,381.97
  4. Step 4: Simplify right side
    39,286.97x = 1,159,241,542.68
  5. Step 5: Solve for x
    x = 1,159,241,542.68/39,286.97
  6. Step 6: Final answer
    x = 29,507.03

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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.