Home / 20,786.96-31,190.92-9,100.24

Finding the Fourth Proportional to 20,786.96, 31,190.92 and 9,100.24

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Solution

The fourth proportional to 20,786.96, 31,190.92 and 9,100.24 is: 13,654.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,786.96 : 31,190.92 = 9,100.24 : x
  2. Step 2: Convert to fraction form
    20,786.96/31,190.92 = 9,100.24/x
  3. Step 3: Cross multiply
    20,786.96x = 31,190.92 × 9,100.24
  4. Step 4: Simplify right side
    20,786.96x = 283,844,857.82
  5. Step 5: Solve for x
    x = 283,844,857.82/20,786.96
  6. Step 6: Final answer
    x = 13,654.95

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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.