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Finding the Fourth Proportional to 36,640.48, 50,555.44 and 20,721.48

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Solution

The fourth proportional to 36,640.48, 50,555.44 and 20,721.48 is: 28,590.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,640.48 : 50,555.44 = 20,721.48 : x
  2. Step 2: Convert to fraction form
    36,640.48/50,555.44 = 20,721.48/x
  3. Step 3: Cross multiply
    36,640.48x = 50,555.44 × 20,721.48
  4. Step 4: Simplify right side
    36,640.48x = 1,047,583,538.85
  5. Step 5: Solve for x
    x = 1,047,583,538.85/36,640.48
  6. Step 6: Final answer
    x = 28,590.88

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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.