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Finding the Fourth Proportional to 19,091.20, 28,648 and 7,997.02

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Solution

The fourth proportional to 19,091.20, 28,648 and 7,997.02 is: 12,000.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,091.20 : 28,648 = 7,997.02 : x
  2. Step 2: Convert to fraction form
    19,091.20/28,648 = 7,997.02/x
  3. Step 3: Cross multiply
    19,091.20x = 28,648 × 7,997.02
  4. Step 4: Simplify right side
    19,091.20x = 229,098,628.96
  5. Step 5: Solve for x
    x = 229,098,628.96/19,091.20
  6. Step 6: Final answer
    x = 12,000.22

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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.