Home / 20,227.25-27,912.67-11,275.61

Finding the Fourth Proportional to 20,227.25, 27,912.67 and 11,275.61

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Solution

The fourth proportional to 20,227.25, 27,912.67 and 11,275.61 is: 15,559.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,227.25 : 27,912.67 = 11,275.61 : x
  2. Step 2: Convert to fraction form
    20,227.25/27,912.67 = 11,275.61/x
  3. Step 3: Cross multiply
    20,227.25x = 27,912.67 × 11,275.61
  4. Step 4: Simplify right side
    20,227.25x = 314,732,213.23
  5. Step 5: Solve for x
    x = 314,732,213.23/20,227.25
  6. Step 6: Final answer
    x = 15,559.81

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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.