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Finding the Fourth Proportional to 11,672.58, 17,502.03 and 7,979.28

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Solution

The fourth proportional to 11,672.58, 17,502.03 and 7,979.28 is: 11,964.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,672.58 : 17,502.03 = 7,979.28 : x
  2. Step 2: Convert to fraction form
    11,672.58/17,502.03 = 7,979.28/x
  3. Step 3: Cross multiply
    11,672.58x = 17,502.03 × 7,979.28
  4. Step 4: Simplify right side
    11,672.58x = 139,653,597.94
  5. Step 5: Solve for x
    x = 139,653,597.94/11,672.58
  6. Step 6: Final answer
    x = 11,964.24

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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.