Home / 21,979.65-32,975.43-7,186.62

Finding the Fourth Proportional to 21,979.65, 32,975.43 and 7,186.62

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Solution

The fourth proportional to 21,979.65, 32,975.43 and 7,186.62 is: 10,781.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,979.65 : 32,975.43 = 7,186.62 : x
  2. Step 2: Convert to fraction form
    21,979.65/32,975.43 = 7,186.62/x
  3. Step 3: Cross multiply
    21,979.65x = 32,975.43 × 7,186.62
  4. Step 4: Simplify right side
    21,979.65x = 236,981,884.75
  5. Step 5: Solve for x
    x = 236,981,884.75/21,979.65
  6. Step 6: Final answer
    x = 10,781.88

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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.