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Finding the Fourth Proportional to 18,611.06, 27,919.54 and 6,765.88

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Solution

The fourth proportional to 18,611.06, 27,919.54 and 6,765.88 is: 10,149.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,611.06 : 27,919.54 = 6,765.88 : x
  2. Step 2: Convert to fraction form
    18,611.06/27,919.54 = 6,765.88/x
  3. Step 3: Cross multiply
    18,611.06x = 27,919.54 × 6,765.88
  4. Step 4: Simplify right side
    18,611.06x = 188,900,257.30
  5. Step 5: Solve for x
    x = 188,900,257.30/18,611.06
  6. Step 6: Final answer
    x = 10,149.89

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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.