Home / 10,922.94-16,384.41-3,131.75

Finding the Fourth Proportional to 10,922.94, 16,384.41 and 3,131.75

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Solution

The fourth proportional to 10,922.94, 16,384.41 and 3,131.75 is: 4,697.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,922.94 : 16,384.41 = 3,131.75 : x
  2. Step 2: Convert to fraction form
    10,922.94/16,384.41 = 3,131.75/x
  3. Step 3: Cross multiply
    10,922.94x = 16,384.41 × 3,131.75
  4. Step 4: Simplify right side
    10,922.94x = 51,311,876.02
  5. Step 5: Solve for x
    x = 51,311,876.02/10,922.94
  6. Step 6: Final answer
    x = 4,697.63

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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.