Home / 36,042.62-49,739.80-20,128.09

Finding the Fourth Proportional to 36,042.62, 49,739.80 and 20,128.09

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Solution

The fourth proportional to 36,042.62, 49,739.80 and 20,128.09 is: 27,777.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,042.62 : 49,739.80 = 20,128.09 : x
  2. Step 2: Convert to fraction form
    36,042.62/49,739.80 = 20,128.09/x
  3. Step 3: Cross multiply
    36,042.62x = 49,739.80 × 20,128.09
  4. Step 4: Simplify right side
    36,042.62x = 1,001,166,996.31
  5. Step 5: Solve for x
    x = 1,001,166,996.31/36,042.62
  6. Step 6: Final answer
    x = 27,777.31

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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.