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Finding the Fourth Proportional to 18,500.80, 27,764.64 and 7,257.76

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Solution

The fourth proportional to 18,500.80, 27,764.64 and 7,257.76 is: 10,891.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,500.80 : 27,764.64 = 7,257.76 : x
  2. Step 2: Convert to fraction form
    18,500.80/27,764.64 = 7,257.76/x
  3. Step 3: Cross multiply
    18,500.80x = 27,764.64 × 7,257.76
  4. Step 4: Simplify right side
    18,500.80x = 201,509,093.61
  5. Step 5: Solve for x
    x = 201,509,093.61/18,500.80
  6. Step 6: Final answer
    x = 10,891.91

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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.