Home / 10,900.92-16,351.26-3,109.80

Finding the Fourth Proportional to 10,900.92, 16,351.26 and 3,109.80

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Solution

The fourth proportional to 10,900.92, 16,351.26 and 3,109.80 is: 4,664.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,900.92 : 16,351.26 = 3,109.80 : x
  2. Step 2: Convert to fraction form
    10,900.92/16,351.26 = 3,109.80/x
  3. Step 3: Cross multiply
    10,900.92x = 16,351.26 × 3,109.80
  4. Step 4: Simplify right side
    10,900.92x = 50,849,148.35
  5. Step 5: Solve for x
    x = 50,849,148.35/10,900.92
  6. Step 6: Final answer
    x = 4,664.67

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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.