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Finding the Fourth Proportional to 16,787,652.80, 25,193,920.80 and 12,308,676.80

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Solution

The fourth proportional to 16,787,652.80, 25,193,920.80 and 12,308,676.80 is: 18,472,137.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,787,652.80 : 25,193,920.80 = 12,308,676.80 : x
  2. Step 2: Convert to fraction form
    16,787,652.80/25,193,920.80 = 12,308,676.80/x
  3. Step 3: Cross multiply
    16,787,652.80x = 25,193,920.80 × 12,308,676.80
  4. Step 4: Simplify right side
    16,787,652.80x = 310,103,828,451,997.44
  5. Step 5: Solve for x
    x = 310,103,828,451,997.44/16,787,652.80
  6. Step 6: Final answer
    x = 18,472,137.36

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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.