Home / 15,211.82-20,990.94-8,496.51

Finding the Fourth Proportional to 15,211.82, 20,990.94 and 8,496.51

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Solution

The fourth proportional to 15,211.82, 20,990.94 and 8,496.51 is: 11,724.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,211.82 : 20,990.94 = 8,496.51 : x
  2. Step 2: Convert to fraction form
    15,211.82/20,990.94 = 8,496.51/x
  3. Step 3: Cross multiply
    15,211.82x = 20,990.94 × 8,496.51
  4. Step 4: Simplify right side
    15,211.82x = 178,349,731.62
  5. Step 5: Solve for x
    x = 178,349,731.62/15,211.82
  6. Step 6: Final answer
    x = 11,724.42

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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.