Home / 11,138.21-16,709.82-3,742.28

Finding the Fourth Proportional to 11,138.21, 16,709.82 and 3,742.28

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Solution

The fourth proportional to 11,138.21, 16,709.82 and 3,742.28 is: 5,614.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,138.21 : 16,709.82 = 3,742.28 : x
  2. Step 2: Convert to fraction form
    11,138.21/16,709.82 = 3,742.28/x
  3. Step 3: Cross multiply
    11,138.21x = 16,709.82 × 3,742.28
  4. Step 4: Simplify right side
    11,138.21x = 62,532,753.80
  5. Step 5: Solve for x
    x = 62,532,753.80/11,138.21
  6. Step 6: Final answer
    x = 5,614.26

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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.