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Finding the Fourth Proportional to 18,803.97, 28,206.45 and 6,324.21

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Solution

The fourth proportional to 18,803.97, 28,206.45 and 6,324.21 is: 9,486.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,803.97 : 28,206.45 = 6,324.21 : x
  2. Step 2: Convert to fraction form
    18,803.97/28,206.45 = 6,324.21/x
  3. Step 3: Cross multiply
    18,803.97x = 28,206.45 × 6,324.21
  4. Step 4: Simplify right side
    18,803.97x = 178,383,513.15
  5. Step 5: Solve for x
    x = 178,383,513.15/18,803.97
  6. Step 6: Final answer
    x = 9,486.48

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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.