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Finding the Fourth Proportional to 18,090.91, 27,143.70 and 8,234.83

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Solution

The fourth proportional to 18,090.91, 27,143.70 and 8,234.83 is: 12,355.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,090.91 : 27,143.70 = 8,234.83 : x
  2. Step 2: Convert to fraction form
    18,090.91/27,143.70 = 8,234.83/x
  3. Step 3: Cross multiply
    18,090.91x = 27,143.70 × 8,234.83
  4. Step 4: Simplify right side
    18,090.91x = 223,523,755.07
  5. Step 5: Solve for x
    x = 223,523,755.07/18,090.91
  6. Step 6: Final answer
    x = 12,355.58

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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.