Home / 11,291.75-15,582.19-6,511.89

Finding the Fourth Proportional to 11,291.75, 15,582.19 and 6,511.89

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Solution

The fourth proportional to 11,291.75, 15,582.19 and 6,511.89 is: 8,986.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,291.75 : 15,582.19 = 6,511.89 : x
  2. Step 2: Convert to fraction form
    11,291.75/15,582.19 = 6,511.89/x
  3. Step 3: Cross multiply
    11,291.75x = 15,582.19 × 6,511.89
  4. Step 4: Simplify right side
    11,291.75x = 101,469,536.75
  5. Step 5: Solve for x
    x = 101,469,536.75/11,291.75
  6. Step 6: Final answer
    x = 8,986.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.