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Finding the Fourth Proportional to 19,205.94, 28,789.11 and 7,356.48

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Solution

The fourth proportional to 19,205.94, 28,789.11 and 7,356.48 is: 11,027.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,205.94 : 28,789.11 = 7,356.48 : x
  2. Step 2: Convert to fraction form
    19,205.94/28,789.11 = 7,356.48/x
  3. Step 3: Cross multiply
    19,205.94x = 28,789.11 × 7,356.48
  4. Step 4: Simplify right side
    19,205.94x = 211,786,367.99
  5. Step 5: Solve for x
    x = 211,786,367.99/19,205.94
  6. Step 6: Final answer
    x = 11,027.13

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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.