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Finding the Fourth Proportional to 11,928.72, 16,460.22 and 6,622.17

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Solution

The fourth proportional to 11,928.72, 16,460.22 and 6,622.17 is: 9,137.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,928.72 : 16,460.22 = 6,622.17 : x
  2. Step 2: Convert to fraction form
    11,928.72/16,460.22 = 6,622.17/x
  3. Step 3: Cross multiply
    11,928.72x = 16,460.22 × 6,622.17
  4. Step 4: Simplify right side
    11,928.72x = 109,002,375.08
  5. Step 5: Solve for x
    x = 109,002,375.08/11,928.72
  6. Step 6: Final answer
    x = 9,137.81

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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.