Home / 39,215.79-54,105.84-22,217.31

Finding the Fourth Proportional to 39,215.79, 54,105.84 and 22,217.31

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Solution

The fourth proportional to 39,215.79, 54,105.84 and 22,217.31 is: 30,653.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,215.79 : 54,105.84 = 22,217.31 : x
  2. Step 2: Convert to fraction form
    39,215.79/54,105.84 = 22,217.31/x
  3. Step 3: Cross multiply
    39,215.79x = 54,105.84 × 22,217.31
  4. Step 4: Simplify right side
    39,215.79x = 1,202,086,220.09
  5. Step 5: Solve for x
    x = 1,202,086,220.09/39,215.79
  6. Step 6: Final answer
    x = 30,653.12

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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.