Home / 10,721.88-16,087.43-5,179.38

Finding the Fourth Proportional to 10,721.88, 16,087.43 and 5,179.38

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Solution

The fourth proportional to 10,721.88, 16,087.43 and 5,179.38 is: 7,771.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,721.88 : 16,087.43 = 5,179.38 : x
  2. Step 2: Convert to fraction form
    10,721.88/16,087.43 = 5,179.38/x
  3. Step 3: Cross multiply
    10,721.88x = 16,087.43 × 5,179.38
  4. Step 4: Simplify right side
    10,721.88x = 83,322,927.17
  5. Step 5: Solve for x
    x = 83,322,927.17/10,721.88
  6. Step 6: Final answer
    x = 7,771.30

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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.