Home / 20,270.33-27,971.09-13,902.38

Finding the Fourth Proportional to 20,270.33, 27,971.09 and 13,902.38

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Solution

The fourth proportional to 20,270.33, 27,971.09 and 13,902.38 is: 19,183.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,270.33 : 27,971.09 = 13,902.38 : x
  2. Step 2: Convert to fraction form
    20,270.33/27,971.09 = 13,902.38/x
  3. Step 3: Cross multiply
    20,270.33x = 27,971.09 × 13,902.38
  4. Step 4: Simplify right side
    20,270.33x = 388,864,827.19
  5. Step 5: Solve for x
    x = 388,864,827.19/20,270.33
  6. Step 6: Final answer
    x = 19,183.94

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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.