Home / 31,979.68-47,942.16-12,272.38

Finding the Fourth Proportional to 31,979.68, 47,942.16 and 12,272.38

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Solution

The fourth proportional to 31,979.68, 47,942.16 and 12,272.38 is: 18,398.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,979.68 : 47,942.16 = 12,272.38 : x
  2. Step 2: Convert to fraction form
    31,979.68/47,942.16 = 12,272.38/x
  3. Step 3: Cross multiply
    31,979.68x = 47,942.16 × 12,272.38
  4. Step 4: Simplify right side
    31,979.68x = 588,364,405.54
  5. Step 5: Solve for x
    x = 588,364,405.54/31,979.68
  6. Step 6: Final answer
    x = 18,398.07

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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.