Home / 11,680.17-16,118.97-6,645.09

Finding the Fourth Proportional to 11,680.17, 16,118.97 and 6,645.09

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Solution

The fourth proportional to 11,680.17, 16,118.97 and 6,645.09 is: 9,170.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,680.17 : 16,118.97 = 6,645.09 : x
  2. Step 2: Convert to fraction form
    11,680.17/16,118.97 = 6,645.09/x
  3. Step 3: Cross multiply
    11,680.17x = 16,118.97 × 6,645.09
  4. Step 4: Simplify right side
    11,680.17x = 107,112,006.36
  5. Step 5: Solve for x
    x = 107,112,006.36/11,680.17
  6. Step 6: Final answer
    x = 9,170.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.