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Finding the Fourth Proportional to 28,882.92, 43,309.62 and 13,287

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Solution

The fourth proportional to 28,882.92, 43,309.62 and 13,287 is: 19,923.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,882.92 : 43,309.62 = 13,287 : x
  2. Step 2: Convert to fraction form
    28,882.92/43,309.62 = 13,287/x
  3. Step 3: Cross multiply
    28,882.92x = 43,309.62 × 13,287
  4. Step 4: Simplify right side
    28,882.92x = 575,454,920.94
  5. Step 5: Solve for x
    x = 575,454,920.94/28,882.92
  6. Step 6: Final answer
    x = 19,923.71

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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.