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Finding the Fourth Proportional to 22,016.44, 30,375.28 and 12,578.32

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Solution

The fourth proportional to 22,016.44, 30,375.28 and 12,578.32 is: 17,353.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,016.44 : 30,375.28 = 12,578.32 : x
  2. Step 2: Convert to fraction form
    22,016.44/30,375.28 = 12,578.32/x
  3. Step 3: Cross multiply
    22,016.44x = 30,375.28 × 12,578.32
  4. Step 4: Simplify right side
    22,016.44x = 382,069,991.93
  5. Step 5: Solve for x
    x = 382,069,991.93/22,016.44
  6. Step 6: Final answer
    x = 17,353.85

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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.