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Finding the Fourth Proportional to 19,227.45, 28,835.49 and 8,133.90

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Solution

The fourth proportional to 19,227.45, 28,835.49 and 8,133.90 is: 12,198.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,227.45 : 28,835.49 = 8,133.90 : x
  2. Step 2: Convert to fraction form
    19,227.45/28,835.49 = 8,133.90/x
  3. Step 3: Cross multiply
    19,227.45x = 28,835.49 × 8,133.90
  4. Step 4: Simplify right side
    19,227.45x = 234,544,992.11
  5. Step 5: Solve for x
    x = 234,544,992.11/19,227.45
  6. Step 6: Final answer
    x = 12,198.45

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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.