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Finding the Fourth Proportional to 18,822.81, 28,224.12 and 6,338.70

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Solution

The fourth proportional to 18,822.81, 28,224.12 and 6,338.70 is: 9,504.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,822.81 : 28,224.12 = 6,338.70 : x
  2. Step 2: Convert to fraction form
    18,822.81/28,224.12 = 6,338.70/x
  3. Step 3: Cross multiply
    18,822.81x = 28,224.12 × 6,338.70
  4. Step 4: Simplify right side
    18,822.81x = 178,904,229.44
  5. Step 5: Solve for x
    x = 178,904,229.44/18,822.81
  6. Step 6: Final answer
    x = 9,504.65

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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.