Home / 36,906.38-50,930.52-20,990.81

Finding the Fourth Proportional to 36,906.38, 50,930.52 and 20,990.81

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Solution

The fourth proportional to 36,906.38, 50,930.52 and 20,990.81 is: 28,967.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,906.38 : 50,930.52 = 20,990.81 : x
  2. Step 2: Convert to fraction form
    36,906.38/50,930.52 = 20,990.81/x
  3. Step 3: Cross multiply
    36,906.38x = 50,930.52 × 20,990.81
  4. Step 4: Simplify right side
    36,906.38x = 1,069,072,613.87
  5. Step 5: Solve for x
    x = 1,069,072,613.87/36,906.38
  6. Step 6: Final answer
    x = 28,967.15

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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.