Home / 20,543.92-28,343.94-11,467.79

Finding the Fourth Proportional to 20,543.92, 28,343.94 and 11,467.79

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Solution

The fourth proportional to 20,543.92, 28,343.94 and 11,467.79 is: 15,821.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,543.92 : 28,343.94 = 11,467.79 : x
  2. Step 2: Convert to fraction form
    20,543.92/28,343.94 = 11,467.79/x
  3. Step 3: Cross multiply
    20,543.92x = 28,343.94 × 11,467.79
  4. Step 4: Simplify right side
    20,543.92x = 325,042,351.69
  5. Step 5: Solve for x
    x = 325,042,351.69/20,543.92
  6. Step 6: Final answer
    x = 15,821.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.