Home / 10,921.75-16,370.92-5,651.45

Finding the Fourth Proportional to 10,921.75, 16,370.92 and 5,651.45

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Solution

The fourth proportional to 10,921.75, 16,370.92 and 5,651.45 is: 8,471.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,921.75 : 16,370.92 = 5,651.45 : x
  2. Step 2: Convert to fraction form
    10,921.75/16,370.92 = 5,651.45/x
  3. Step 3: Cross multiply
    10,921.75x = 16,370.92 × 5,651.45
  4. Step 4: Simplify right side
    10,921.75x = 92,519,422.43
  5. Step 5: Solve for x
    x = 92,519,422.43/10,921.75
  6. Step 6: Final answer
    x = 8,471.12

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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.