Home / 11,115.69-16,680.09-4,100.64

Finding the Fourth Proportional to 11,115.69, 16,680.09 and 4,100.64

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Solution

The fourth proportional to 11,115.69, 16,680.09 and 4,100.64 is: 6,153.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,115.69 : 16,680.09 = 4,100.64 : x
  2. Step 2: Convert to fraction form
    11,115.69/16,680.09 = 4,100.64/x
  3. Step 3: Cross multiply
    11,115.69x = 16,680.09 × 4,100.64
  4. Step 4: Simplify right side
    11,115.69x = 68,399,044.26
  5. Step 5: Solve for x
    x = 68,399,044.26/11,115.69
  6. Step 6: Final answer
    x = 6,153.38

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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.