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Finding the Fourth Proportional to 18,236.80, 27,358.11 and 7,706.92

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Solution

The fourth proportional to 18,236.80, 27,358.11 and 7,706.92 is: 11,561.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,236.80 : 27,358.11 = 7,706.92 : x
  2. Step 2: Convert to fraction form
    18,236.80/27,358.11 = 7,706.92/x
  3. Step 3: Cross multiply
    18,236.80x = 27,358.11 × 7,706.92
  4. Step 4: Simplify right side
    18,236.80x = 210,846,784.39
  5. Step 5: Solve for x
    x = 210,846,784.39/18,236.80
  6. Step 6: Final answer
    x = 11,561.61

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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.