Home / 11,910.53-17,865.80-4,115.09

Finding the Fourth Proportional to 11,910.53, 17,865.80 and 4,115.09

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Solution

The fourth proportional to 11,910.53, 17,865.80 and 4,115.09 is: 6,172.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,910.53 : 17,865.80 = 4,115.09 : x
  2. Step 2: Convert to fraction form
    11,910.53/17,865.80 = 4,115.09/x
  3. Step 3: Cross multiply
    11,910.53x = 17,865.80 × 4,115.09
  4. Step 4: Simplify right side
    11,910.53x = 73,519,354.35
  5. Step 5: Solve for x
    x = 73,519,354.35/11,910.53
  6. Step 6: Final answer
    x = 6,172.64

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1.5x scale

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.