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Finding the Fourth Proportional to 36,815.80, 55,230.90 and 15,755.80

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Solution

The fourth proportional to 36,815.80, 55,230.90 and 15,755.80 is: 23,636.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,815.80 : 55,230.90 = 15,755.80 : x
  2. Step 2: Convert to fraction form
    36,815.80/55,230.90 = 15,755.80/x
  3. Step 3: Cross multiply
    36,815.80x = 55,230.90 × 15,755.80
  4. Step 4: Simplify right side
    36,815.80x = 870,207,014.22
  5. Step 5: Solve for x
    x = 870,207,014.22/36,815.80
  6. Step 6: Final answer
    x = 23,636.78

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1.5x scale

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.