Home / 39,786.68-54,904.56-21,883.52

Finding the Fourth Proportional to 39,786.68, 54,904.56 and 21,883.52

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Solution

The fourth proportional to 39,786.68, 54,904.56 and 21,883.52 is: 30,198.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,786.68 : 54,904.56 = 21,883.52 : x
  2. Step 2: Convert to fraction form
    39,786.68/54,904.56 = 21,883.52/x
  3. Step 3: Cross multiply
    39,786.68x = 54,904.56 × 21,883.52
  4. Step 4: Simplify right side
    39,786.68x = 1,201,505,036.85
  5. Step 5: Solve for x
    x = 1,201,505,036.85/39,786.68
  6. Step 6: Final answer
    x = 30,198.68

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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.