Home / 39,800.82-54,923.40-21,894.69

Finding the Fourth Proportional to 39,800.82, 54,923.40 and 21,894.69

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Solution

The fourth proportional to 39,800.82, 54,923.40 and 21,894.69 is: 30,213.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,800.82 : 54,923.40 = 21,894.69 : x
  2. Step 2: Convert to fraction form
    39,800.82/54,923.40 = 21,894.69/x
  3. Step 3: Cross multiply
    39,800.82x = 54,923.40 × 21,894.69
  4. Step 4: Simplify right side
    39,800.82x = 1,202,530,816.75
  5. Step 5: Solve for x
    x = 1,202,530,816.75/39,800.82
  6. Step 6: Final answer
    x = 30,213.72

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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.