Home / 10,906.28-16,360.38-3,981.32

Finding the Fourth Proportional to 10,906.28, 16,360.38 and 3,981.32

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Solution

The fourth proportional to 10,906.28, 16,360.38 and 3,981.32 is: 5,972.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,906.28 : 16,360.38 = 3,981.32 : x
  2. Step 2: Convert to fraction form
    10,906.28/16,360.38 = 3,981.32/x
  3. Step 3: Cross multiply
    10,906.28x = 16,360.38 × 3,981.32
  4. Step 4: Simplify right side
    10,906.28x = 65,135,908.10
  5. Step 5: Solve for x
    x = 65,135,908.10/10,906.28
  6. Step 6: Final answer
    x = 5,972.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.