Home / 11,921.76-17,882.64-5,346.72

Finding the Fourth Proportional to 11,921.76, 17,882.64 and 5,346.72

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Solution

The fourth proportional to 11,921.76, 17,882.64 and 5,346.72 is: 8,020.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921.76 : 17,882.64 = 5,346.72 : x
  2. Step 2: Convert to fraction form
    11,921.76/17,882.64 = 5,346.72/x
  3. Step 3: Cross multiply
    11,921.76x = 17,882.64 × 5,346.72
  4. Step 4: Simplify right side
    11,921.76x = 95,613,468.94
  5. Step 5: Solve for x
    x = 95,613,468.94/11,921.76
  6. Step 6: Final answer
    x = 8,020.08

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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.