Home / 20,221.25-27,902.04-11,721.71

Finding the Fourth Proportional to 20,221.25, 27,902.04 and 11,721.71

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Solution

The fourth proportional to 20,221.25, 27,902.04 and 11,721.71 is: 16,174.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,221.25 : 27,902.04 = 11,721.71 : x
  2. Step 2: Convert to fraction form
    20,221.25/27,902.04 = 11,721.71/x
  3. Step 3: Cross multiply
    20,221.25x = 27,902.04 × 11,721.71
  4. Step 4: Simplify right side
    20,221.25x = 327,059,621.29
  5. Step 5: Solve for x
    x = 327,059,621.29/20,221.25
  6. Step 6: Final answer
    x = 16,174.06

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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.