Home / 11,212.92-16,821.90-3,421.14

Finding the Fourth Proportional to 11,212.92, 16,821.90 and 3,421.14

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Solution

The fourth proportional to 11,212.92, 16,821.90 and 3,421.14 is: 5,132.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,212.92 : 16,821.90 = 3,421.14 : x
  2. Step 2: Convert to fraction form
    11,212.92/16,821.90 = 3,421.14/x
  3. Step 3: Cross multiply
    11,212.92x = 16,821.90 × 3,421.14
  4. Step 4: Simplify right side
    11,212.92x = 57,550,074.97
  5. Step 5: Solve for x
    x = 57,550,074.97/11,212.92
  6. Step 6: Final answer
    x = 5,132.48

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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.