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Finding the Fourth Proportional to 18,626.77, 27,940.16 and 5,479.14

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Solution

The fourth proportional to 18,626.77, 27,940.16 and 5,479.14 is: 8,218.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,626.77 : 27,940.16 = 5,479.14 : x
  2. Step 2: Convert to fraction form
    18,626.77/27,940.16 = 5,479.14/x
  3. Step 3: Cross multiply
    18,626.77x = 27,940.16 × 5,479.14
  4. Step 4: Simplify right side
    18,626.77x = 153,088,020.87
  5. Step 5: Solve for x
    x = 153,088,020.87/18,626.77
  6. Step 6: Final answer
    x = 8,218.71

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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.