Home / 11,212.91-16,815.45-3,313.34

Finding the Fourth Proportional to 11,212.91, 16,815.45 and 3,313.34

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Solution

The fourth proportional to 11,212.91, 16,815.45 and 3,313.34 is: 4,968.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,212.91 : 16,815.45 = 3,313.34 : x
  2. Step 2: Convert to fraction form
    11,212.91/16,815.45 = 3,313.34/x
  3. Step 3: Cross multiply
    11,212.91x = 16,815.45 × 3,313.34
  4. Step 4: Simplify right side
    11,212.91x = 55,715,303.10
  5. Step 5: Solve for x
    x = 55,715,303.10/11,212.91
  6. Step 6: Final answer
    x = 4,968.85

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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.