Home / 11,175.05-15,420.94-6,696.56

Finding the Fourth Proportional to 11,175.05, 15,420.94 and 6,696.56

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Solution

The fourth proportional to 11,175.05, 15,420.94 and 6,696.56 is: 9,240.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,175.05 : 15,420.94 = 6,696.56 : x
  2. Step 2: Convert to fraction form
    11,175.05/15,420.94 = 6,696.56/x
  3. Step 3: Cross multiply
    11,175.05x = 15,420.94 × 6,696.56
  4. Step 4: Simplify right side
    11,175.05x = 103,267,249.97
  5. Step 5: Solve for x
    x = 103,267,249.97/11,175.05
  6. Step 6: Final answer
    x = 9,240.88

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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.