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Finding the Fourth Proportional to 18,794.36, 28,183.28 and 5,643.68

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Solution

The fourth proportional to 18,794.36, 28,183.28 and 5,643.68 is: 8,463.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,794.36 : 28,183.28 = 5,643.68 : x
  2. Step 2: Convert to fraction form
    18,794.36/28,183.28 = 5,643.68/x
  3. Step 3: Cross multiply
    18,794.36x = 28,183.28 × 5,643.68
  4. Step 4: Simplify right side
    18,794.36x = 159,057,244.54
  5. Step 5: Solve for x
    x = 159,057,244.54/18,794.36
  6. Step 6: Final answer
    x = 8,463.03

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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.