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Finding the Fourth Proportional to 18,657.27, 27,976.05 and 5,507.73

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Solution

The fourth proportional to 18,657.27, 27,976.05 and 5,507.73 is: 8,258.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,657.27 : 27,976.05 = 5,507.73 : x
  2. Step 2: Convert to fraction form
    18,657.27/27,976.05 = 5,507.73/x
  3. Step 3: Cross multiply
    18,657.27x = 27,976.05 × 5,507.73
  4. Step 4: Simplify right side
    18,657.27x = 154,084,529.87
  5. Step 5: Solve for x
    x = 154,084,529.87/18,657.27
  6. Step 6: Final answer
    x = 8,258.69

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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.