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Finding the Fourth Proportional to 18,657.62, 27,990.12 and 5,330.73

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Solution

The fourth proportional to 18,657.62, 27,990.12 and 5,330.73 is: 7,997.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,657.62 : 27,990.12 = 5,330.73 : x
  2. Step 2: Convert to fraction form
    18,657.62/27,990.12 = 5,330.73/x
  3. Step 3: Cross multiply
    18,657.62x = 27,990.12 × 5,330.73
  4. Step 4: Simplify right side
    18,657.62x = 149,207,632.44
  5. Step 5: Solve for x
    x = 149,207,632.44/18,657.62
  6. Step 6: Final answer
    x = 7,997.14

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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.