Home / 11,979.28-17,962.43-5,397.76

Finding the Fourth Proportional to 11,979.28, 17,962.43 and 5,397.76

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Solution

The fourth proportional to 11,979.28, 17,962.43 and 5,397.76 is: 8,093.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,979.28 : 17,962.43 = 5,397.76 : x
  2. Step 2: Convert to fraction form
    11,979.28/17,962.43 = 5,397.76/x
  3. Step 3: Cross multiply
    11,979.28x = 17,962.43 × 5,397.76
  4. Step 4: Simplify right side
    11,979.28x = 96,956,769.36
  5. Step 5: Solve for x
    x = 96,956,769.36/11,979.28
  6. Step 6: Final answer
    x = 8,093.71

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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.