Home / 20,578.86-30,866.58-12,682.62

Finding the Fourth Proportional to 20,578.86, 30,866.58 and 12,682.62

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Solution

The fourth proportional to 20,578.86, 30,866.58 and 12,682.62 is: 19,022.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,578.86 : 30,866.58 = 12,682.62 : x
  2. Step 2: Convert to fraction form
    20,578.86/30,866.58 = 12,682.62/x
  3. Step 3: Cross multiply
    20,578.86x = 30,866.58 × 12,682.62
  4. Step 4: Simplify right side
    20,578.86x = 391,469,104.84
  5. Step 5: Solve for x
    x = 391,469,104.84/20,578.86
  6. Step 6: Final answer
    x = 19,022.88

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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.