Home / 20,185.11-27,855.29-11,232.65

Finding the Fourth Proportional to 20,185.11, 27,855.29 and 11,232.65

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Solution

The fourth proportional to 20,185.11, 27,855.29 and 11,232.65 is: 15,500.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,185.11 : 27,855.29 = 11,232.65 : x
  2. Step 2: Convert to fraction form
    20,185.11/27,855.29 = 11,232.65/x
  3. Step 3: Cross multiply
    20,185.11x = 27,855.29 × 11,232.65
  4. Step 4: Simplify right side
    20,185.11x = 312,888,820.94
  5. Step 5: Solve for x
    x = 312,888,820.94/20,185.11
  6. Step 6: Final answer
    x = 15,500.97

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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.