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Finding the Fourth Proportional to 18,618.01, 27,926.98 and 8,086.66

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Solution

The fourth proportional to 18,618.01, 27,926.98 and 8,086.66 is: 12,129.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,618.01 : 27,926.98 = 8,086.66 : x
  2. Step 2: Convert to fraction form
    18,618.01/27,926.98 = 8,086.66/x
  3. Step 3: Cross multiply
    18,618.01x = 27,926.98 × 8,086.66
  4. Step 4: Simplify right side
    18,618.01x = 225,835,902.05
  5. Step 5: Solve for x
    x = 225,835,902.05/18,618.01
  6. Step 6: Final answer
    x = 12,129.97

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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.