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Finding the Fourth Proportional to 19,508.94, 29,279.79 and 18,278.73

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Solution

The fourth proportional to 19,508.94, 29,279.79 and 18,278.73 is: 27,433.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,508.94 : 29,279.79 = 18,278.73 : x
  2. Step 2: Convert to fraction form
    19,508.94/29,279.79 = 18,278.73/x
  3. Step 3: Cross multiply
    19,508.94x = 29,279.79 × 18,278.73
  4. Step 4: Simplify right side
    19,508.94x = 535,197,375.87
  5. Step 5: Solve for x
    x = 535,197,375.87/19,508.94
  6. Step 6: Final answer
    x = 27,433.44

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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.