Home / 10,961.36-15,126.57-6,719.79

Finding the Fourth Proportional to 10,961.36, 15,126.57 and 6,719.79

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Solution

The fourth proportional to 10,961.36, 15,126.57 and 6,719.79 is: 9,273.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,961.36 : 15,126.57 = 6,719.79 : x
  2. Step 2: Convert to fraction form
    10,961.36/15,126.57 = 6,719.79/x
  3. Step 3: Cross multiply
    10,961.36x = 15,126.57 × 6,719.79
  4. Step 4: Simplify right side
    10,961.36x = 101,647,373.82
  5. Step 5: Solve for x
    x = 101,647,373.82/10,961.36
  6. Step 6: Final answer
    x = 9,273.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.