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Finding the Fourth Proportional to 19,199.92, 28,777.92 and 8,089.96

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Solution

The fourth proportional to 19,199.92, 28,777.92 and 8,089.96 is: 12,125.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,199.92 : 28,777.92 = 8,089.96 : x
  2. Step 2: Convert to fraction form
    19,199.92/28,777.92 = 8,089.96/x
  3. Step 3: Cross multiply
    19,199.92x = 28,777.92 × 8,089.96
  4. Step 4: Simplify right side
    19,199.92x = 232,812,221.68
  5. Step 5: Solve for x
    x = 232,812,221.68/19,199.92
  6. Step 6: Final answer
    x = 12,125.69

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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.