Home / 10,922.89-16,382.51-3,129.88

Finding the Fourth Proportional to 10,922.89, 16,382.51 and 3,129.88

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Solution

The fourth proportional to 10,922.89, 16,382.51 and 3,129.88 is: 4,694.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,922.89 : 16,382.51 = 3,129.88 : x
  2. Step 2: Convert to fraction form
    10,922.89/16,382.51 = 3,129.88/x
  3. Step 3: Cross multiply
    10,922.89x = 16,382.51 × 3,129.88
  4. Step 4: Simplify right side
    10,922.89x = 51,275,192.84
  5. Step 5: Solve for x
    x = 51,275,192.84/10,922.89
  6. Step 6: Final answer
    x = 4,694.29

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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.