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Finding the Fourth Proportional to 36,211.69, 49,971.72 and 20,295.80

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Solution

The fourth proportional to 36,211.69, 49,971.72 and 20,295.80 is: 28,007.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,211.69 : 49,971.72 = 20,295.80 : x
  2. Step 2: Convert to fraction form
    36,211.69/49,971.72 = 20,295.80/x
  3. Step 3: Cross multiply
    36,211.69x = 49,971.72 × 20,295.80
  4. Step 4: Simplify right side
    36,211.69x = 1,014,215,683.44
  5. Step 5: Solve for x
    x = 1,014,215,683.44/36,211.69
  6. Step 6: Final answer
    x = 28,007.97

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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.