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Finding the Fourth Proportional to 33,020.80, 49,552.80 and 18,980.80

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Solution

The fourth proportional to 33,020.80, 49,552.80 and 18,980.80 is: 28,483.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,020.80 : 49,552.80 = 18,980.80 : x
  2. Step 2: Convert to fraction form
    33,020.80/49,552.80 = 18,980.80/x
  3. Step 3: Cross multiply
    33,020.80x = 49,552.80 × 18,980.80
  4. Step 4: Simplify right side
    33,020.80x = 940,551,786.24
  5. Step 5: Solve for x
    x = 940,551,786.24/33,020.80
  6. Step 6: Final answer
    x = 28,483.62

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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.