Home / 20,091.65-27,728.12-11,141.96

Finding the Fourth Proportional to 20,091.65, 27,728.12 and 11,141.96

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Solution

The fourth proportional to 20,091.65, 27,728.12 and 11,141.96 is: 15,376.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,091.65 : 27,728.12 = 11,141.96 : x
  2. Step 2: Convert to fraction form
    20,091.65/27,728.12 = 11,141.96/x
  3. Step 3: Cross multiply
    20,091.65x = 27,728.12 × 11,141.96
  4. Step 4: Simplify right side
    20,091.65x = 308,945,603.92
  5. Step 5: Solve for x
    x = 308,945,603.92/20,091.65
  6. Step 6: Final answer
    x = 15,376.82

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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.