Home / 11,979.26-17,972.35-4,957.97

Finding the Fourth Proportional to 11,979.26, 17,972.35 and 4,957.97

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Solution

The fourth proportional to 11,979.26, 17,972.35 and 4,957.97 is: 7,438.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,979.26 : 17,972.35 = 4,957.97 : x
  2. Step 2: Convert to fraction form
    11,979.26/17,972.35 = 4,957.97/x
  3. Step 3: Cross multiply
    11,979.26x = 17,972.35 × 4,957.97
  4. Step 4: Simplify right side
    11,979.26x = 89,106,372.13
  5. Step 5: Solve for x
    x = 89,106,372.13/11,979.26
  6. Step 6: Final answer
    x = 7,438.39

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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.