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Finding the Fourth Proportional to 18,025.73, 27,022.93 and 8,661.05

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Solution

The fourth proportional to 18,025.73, 27,022.93 and 8,661.05 is: 12,984.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,025.73 : 27,022.93 = 8,661.05 : x
  2. Step 2: Convert to fraction form
    18,025.73/27,022.93 = 8,661.05/x
  3. Step 3: Cross multiply
    18,025.73x = 27,022.93 × 8,661.05
  4. Step 4: Simplify right side
    18,025.73x = 234,046,791.11
  5. Step 5: Solve for x
    x = 234,046,791.11/18,025.73
  6. Step 6: Final answer
    x = 12,984.04

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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.