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Finding the Fourth Proportional to 18,794.47, 28,183.20 and 8,945.68

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Solution

The fourth proportional to 18,794.47, 28,183.20 and 8,945.68 is: 13,414.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,794.47 : 28,183.20 = 8,945.68 : x
  2. Step 2: Convert to fraction form
    18,794.47/28,183.20 = 8,945.68/x
  3. Step 3: Cross multiply
    18,794.47x = 28,183.20 × 8,945.68
  4. Step 4: Simplify right side
    18,794.47x = 252,117,888.58
  5. Step 5: Solve for x
    x = 252,117,888.58/18,794.47
  6. Step 6: Final answer
    x = 13,414.47

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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.