Home / 19,020.20-28,530.30-18,728.60

Finding the Fourth Proportional to 19,020.20, 28,530.30 and 18,728.60

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Solution

The fourth proportional to 19,020.20, 28,530.30 and 18,728.60 is: 28,092.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,020.20 : 28,530.30 = 18,728.60 : x
  2. Step 2: Convert to fraction form
    19,020.20/28,530.30 = 18,728.60/x
  3. Step 3: Cross multiply
    19,020.20x = 28,530.30 × 18,728.60
  4. Step 4: Simplify right side
    19,020.20x = 534,332,576.58
  5. Step 5: Solve for x
    x = 534,332,576.58/19,020.20
  6. Step 6: Final answer
    x = 28,092.90

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.