Home / 39,388.60-54,357.69-22,395.70

Finding the Fourth Proportional to 39,388.60, 54,357.69 and 22,395.70

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Solution

The fourth proportional to 39,388.60, 54,357.69 and 22,395.70 is: 30,906.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,388.60 : 54,357.69 = 22,395.70 : x
  2. Step 2: Convert to fraction form
    39,388.60/54,357.69 = 22,395.70/x
  3. Step 3: Cross multiply
    39,388.60x = 54,357.69 × 22,395.70
  4. Step 4: Simplify right side
    39,388.60x = 1,217,378,517.93
  5. Step 5: Solve for x
    x = 1,217,378,517.93/39,388.60
  6. Step 6: Final answer
    x = 30,906.87

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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.