Home / 10,815.14-16,234.86-8,379.33

Finding the Fourth Proportional to 10,815.14, 16,234.86 and 8,379.33

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Solution

The fourth proportional to 10,815.14, 16,234.86 and 8,379.33 is: 12,578.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,815.14 : 16,234.86 = 8,379.33 : x
  2. Step 2: Convert to fraction form
    10,815.14/16,234.86 = 8,379.33/x
  3. Step 3: Cross multiply
    10,815.14x = 16,234.86 × 8,379.33
  4. Step 4: Simplify right side
    10,815.14x = 136,037,249.44
  5. Step 5: Solve for x
    x = 136,037,249.44/10,815.14
  6. Step 6: Final answer
    x = 12,578.41

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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.