Home / 20,986.51-28,941.41-16,198.80

Finding the Fourth Proportional to 20,986.51, 28,941.41 and 16,198.80

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Solution

The fourth proportional to 20,986.51, 28,941.41 and 16,198.80 is: 22,338.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,986.51 : 28,941.41 = 16,198.80 : x
  2. Step 2: Convert to fraction form
    20,986.51/28,941.41 = 16,198.80/x
  3. Step 3: Cross multiply
    20,986.51x = 28,941.41 × 16,198.80
  4. Step 4: Simplify right side
    20,986.51x = 468,816,112.31
  5. Step 5: Solve for x
    x = 468,816,112.31/20,986.51
  6. Step 6: Final answer
    x = 22,338.93

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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.