Home / 11,421.72-17,131.32-3,631.14

Finding the Fourth Proportional to 11,421.72, 17,131.32 and 3,631.14

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Solution

The fourth proportional to 11,421.72, 17,131.32 and 3,631.14 is: 5,446.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,421.72 : 17,131.32 = 3,631.14 : x
  2. Step 2: Convert to fraction form
    11,421.72/17,131.32 = 3,631.14/x
  3. Step 3: Cross multiply
    11,421.72x = 17,131.32 × 3,631.14
  4. Step 4: Simplify right side
    11,421.72x = 62,206,221.30
  5. Step 5: Solve for x
    x = 62,206,221.30/11,421.72
  6. Step 6: Final answer
    x = 5,446.31

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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.