Home / 11,942.16-16,471.68-7,961.28

Finding the Fourth Proportional to 11,942.16, 16,471.68 and 7,961.28

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Solution

The fourth proportional to 11,942.16, 16,471.68 and 7,961.28 is: 10,980.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,942.16 : 16,471.68 = 7,961.28 : x
  2. Step 2: Convert to fraction form
    11,942.16/16,471.68 = 7,961.28/x
  3. Step 3: Cross multiply
    11,942.16x = 16,471.68 × 7,961.28
  4. Step 4: Simplify right side
    11,942.16x = 131,135,656.55
  5. Step 5: Solve for x
    x = 131,135,656.55/11,942.16
  6. Step 6: Final answer
    x = 10,980.90

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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.