Home / 39,891.58-55,049.07-21,986.26

Finding the Fourth Proportional to 39,891.58, 55,049.07 and 21,986.26

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Solution

The fourth proportional to 39,891.58, 55,049.07 and 21,986.26 is: 30,340.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,891.58 : 55,049.07 = 21,986.26 : x
  2. Step 2: Convert to fraction form
    39,891.58/55,049.07 = 21,986.26/x
  3. Step 3: Cross multiply
    39,891.58x = 55,049.07 × 21,986.26
  4. Step 4: Simplify right side
    39,891.58x = 1,210,323,110.60
  5. Step 5: Solve for x
    x = 1,210,323,110.60/39,891.58
  6. Step 6: Final answer
    x = 30,340.32

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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.