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Finding the Fourth Proportional to 19,176.87, 28,741.08 and 8,635.68

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Solution

The fourth proportional to 19,176.87, 28,741.08 and 8,635.68 is: 12,942.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,176.87 : 28,741.08 = 8,635.68 : x
  2. Step 2: Convert to fraction form
    19,176.87/28,741.08 = 8,635.68/x
  3. Step 3: Cross multiply
    19,176.87x = 28,741.08 × 8,635.68
  4. Step 4: Simplify right side
    19,176.87x = 248,198,769.73
  5. Step 5: Solve for x
    x = 248,198,769.73/19,176.87
  6. Step 6: Final answer
    x = 12,942.61

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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.