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Finding the Fourth Proportional to 16,647,690.80, 24,929,545.80 and 13,288,458.80

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Solution

The fourth proportional to 16,647,690.80, 24,929,545.80 and 13,288,458.80 is: 19,899,170.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,647,690.80 : 24,929,545.80 = 13,288,458.80 : x
  2. Step 2: Convert to fraction form
    16,647,690.80/24,929,545.80 = 13,288,458.80/x
  3. Step 3: Cross multiply
    16,647,690.80x = 24,929,545.80 × 13,288,458.80
  4. Step 4: Simplify right side
    16,647,690.80x = 331,275,242,266,013.06
  5. Step 5: Solve for x
    x = 331,275,242,266,013.06/16,647,690.80
  6. Step 6: Final answer
    x = 19,899,170.78

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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.