Home / 20,268.32-30,198.62-19,136.55

Finding the Fourth Proportional to 20,268.32, 30,198.62 and 19,136.55

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Solution

The fourth proportional to 20,268.32, 30,198.62 and 19,136.55 is: 28,512.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,268.32 : 30,198.62 = 19,136.55 : x
  2. Step 2: Convert to fraction form
    20,268.32/30,198.62 = 19,136.55/x
  3. Step 3: Cross multiply
    20,268.32x = 30,198.62 × 19,136.55
  4. Step 4: Simplify right side
    20,268.32x = 577,897,305.88
  5. Step 5: Solve for x
    x = 577,897,305.88/20,268.32
  6. Step 6: Final answer
    x = 28,512.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.