Home / 20,188.70-30,249.73-11,731.46

Finding the Fourth Proportional to 20,188.70, 30,249.73 and 11,731.46

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Solution

The fourth proportional to 20,188.70, 30,249.73 and 11,731.46 is: 17,577.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,188.70 : 30,249.73 = 11,731.46 : x
  2. Step 2: Convert to fraction form
    20,188.70/30,249.73 = 11,731.46/x
  3. Step 3: Cross multiply
    20,188.70x = 30,249.73 × 11,731.46
  4. Step 4: Simplify right side
    20,188.70x = 354,873,550.16
  5. Step 5: Solve for x
    x = 354,873,550.16/20,188.70
  6. Step 6: Final answer
    x = 17,577.83

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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.