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Finding the Fourth Proportional to 19,091.68, 28,648.68 and 7,997.44

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Solution

The fourth proportional to 19,091.68, 28,648.68 and 7,997.44 is: 12,000.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,091.68 : 28,648.68 = 7,997.44 : x
  2. Step 2: Convert to fraction form
    19,091.68/28,648.68 = 7,997.44/x
  3. Step 3: Cross multiply
    19,091.68x = 28,648.68 × 7,997.44
  4. Step 4: Simplify right side
    19,091.68x = 229,115,997.77
  5. Step 5: Solve for x
    x = 229,115,997.77/19,091.68
  6. Step 6: Final answer
    x = 12,000.83

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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.