Home / 39,814.80-54,940.84-21,910.56

Finding the Fourth Proportional to 39,814.80, 54,940.84 and 21,910.56

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Solution

The fourth proportional to 39,814.80, 54,940.84 and 21,910.56 is: 30,234.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,814.80 : 54,940.84 = 21,910.56 : x
  2. Step 2: Convert to fraction form
    39,814.80/54,940.84 = 21,910.56/x
  3. Step 3: Cross multiply
    39,814.80x = 54,940.84 × 21,910.56
  4. Step 4: Simplify right side
    39,814.80x = 1,203,784,571.27
  5. Step 5: Solve for x
    x = 1,203,784,571.27/39,814.80
  6. Step 6: Final answer
    x = 30,234.60

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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.