Home / 11,109.08-16,660.10-3,315.80

Finding the Fourth Proportional to 11,109.08, 16,660.10 and 3,315.80

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Solution

The fourth proportional to 11,109.08, 16,660.10 and 3,315.80 is: 4,972.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,109.08 : 16,660.10 = 3,315.80 : x
  2. Step 2: Convert to fraction form
    11,109.08/16,660.10 = 3,315.80/x
  3. Step 3: Cross multiply
    11,109.08x = 16,660.10 × 3,315.80
  4. Step 4: Simplify right side
    11,109.08x = 55,241,559.58
  5. Step 5: Solve for x
    x = 55,241,559.58/11,109.08
  6. Step 6: Final answer
    x = 4,972.65

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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.