Home / 38,494.20-57,739.86-20,998.20

Finding the Fourth Proportional to 38,494.20, 57,739.86 and 20,998.20

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Solution

The fourth proportional to 38,494.20, 57,739.86 and 20,998.20 is: 31,496.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,494.20 : 57,739.86 = 20,998.20 : x
  2. Step 2: Convert to fraction form
    38,494.20/57,739.86 = 20,998.20/x
  3. Step 3: Cross multiply
    38,494.20x = 57,739.86 × 20,998.20
  4. Step 4: Simplify right side
    38,494.20x = 1,212,433,128.25
  5. Step 5: Solve for x
    x = 1,212,433,128.25/38,494.20
  6. Step 6: Final answer
    x = 31,496.51

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Double scale
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Similar ratio
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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.