Home / 10,786.91-16,182.36-4,212.69

Finding the Fourth Proportional to 10,786.91, 16,182.36 and 4,212.69

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Solution

The fourth proportional to 10,786.91, 16,182.36 and 4,212.69 is: 6,319.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,786.91 : 16,182.36 = 4,212.69 : x
  2. Step 2: Convert to fraction form
    10,786.91/16,182.36 = 4,212.69/x
  3. Step 3: Cross multiply
    10,786.91x = 16,182.36 × 4,212.69
  4. Step 4: Simplify right side
    10,786.91x = 68,171,266.15
  5. Step 5: Solve for x
    x = 68,171,266.15/10,786.91
  6. Step 6: Final answer
    x = 6,319.82

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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.