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Finding the Fourth Proportional to 18,604.11, 27,911.04 and 8,223.15

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Solution

The fourth proportional to 18,604.11, 27,911.04 and 8,223.15 is: 12,336.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,604.11 : 27,911.04 = 8,223.15 : x
  2. Step 2: Convert to fraction form
    18,604.11/27,911.04 = 8,223.15/x
  3. Step 3: Cross multiply
    18,604.11x = 27,911.04 × 8,223.15
  4. Step 4: Simplify right side
    18,604.11x = 229,516,668.58
  5. Step 5: Solve for x
    x = 229,516,668.58/18,604.11
  6. Step 6: Final answer
    x = 12,336.88

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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.