Home / 10,786.16-16,178.89-3,390.46

Finding the Fourth Proportional to 10,786.16, 16,178.89 and 3,390.46

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Solution

The fourth proportional to 10,786.16, 16,178.89 and 3,390.46 is: 5,085.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,786.16 : 16,178.89 = 3,390.46 : x
  2. Step 2: Convert to fraction form
    10,786.16/16,178.89 = 3,390.46/x
  3. Step 3: Cross multiply
    10,786.16x = 16,178.89 × 3,390.46
  4. Step 4: Simplify right side
    10,786.16x = 54,853,879.39
  5. Step 5: Solve for x
    x = 54,853,879.39/10,786.16
  6. Step 6: Final answer
    x = 5,085.58

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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.