Home / 10,786.38-16,156.19-5,228.09

Finding the Fourth Proportional to 10,786.38, 16,156.19 and 5,228.09

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Solution

The fourth proportional to 10,786.38, 16,156.19 and 5,228.09 is: 7,830.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,786.38 : 16,156.19 = 5,228.09 : x
  2. Step 2: Convert to fraction form
    10,786.38/16,156.19 = 5,228.09/x
  3. Step 3: Cross multiply
    10,786.38x = 16,156.19 × 5,228.09
  4. Step 4: Simplify right side
    10,786.38x = 84,466,048.64
  5. Step 5: Solve for x
    x = 84,466,048.64/10,786.38
  6. Step 6: Final answer
    x = 7,830.81

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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.