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Finding the Fourth Proportional to 18,066.70, 27,108.15 and 8,200.90

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Solution

The fourth proportional to 18,066.70, 27,108.15 and 8,200.90 is: 12,305.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,066.70 : 27,108.15 = 8,200.90 : x
  2. Step 2: Convert to fraction form
    18,066.70/27,108.15 = 8,200.90/x
  3. Step 3: Cross multiply
    18,066.70x = 27,108.15 × 8,200.90
  4. Step 4: Simplify right side
    18,066.70x = 222,311,227.34
  5. Step 5: Solve for x
    x = 222,311,227.34/18,066.70
  6. Step 6: Final answer
    x = 12,305.03

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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.