Home / 20,286.06-27,991.50-11,333.10

Finding the Fourth Proportional to 20,286.06, 27,991.50 and 11,333.10

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Solution

The fourth proportional to 20,286.06, 27,991.50 and 11,333.10 is: 15,637.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,286.06 : 27,991.50 = 11,333.10 : x
  2. Step 2: Convert to fraction form
    20,286.06/27,991.50 = 11,333.10/x
  3. Step 3: Cross multiply
    20,286.06x = 27,991.50 × 11,333.10
  4. Step 4: Simplify right side
    20,286.06x = 317,230,468.65
  5. Step 5: Solve for x
    x = 317,230,468.65/20,286.06
  6. Step 6: Final answer
    x = 15,637.86

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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.