Home / 20,231.92-27,918.29-11,279.26

Finding the Fourth Proportional to 20,231.92, 27,918.29 and 11,279.26

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Solution

The fourth proportional to 20,231.92, 27,918.29 and 11,279.26 is: 15,564.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,231.92 : 27,918.29 = 11,279.26 : x
  2. Step 2: Convert to fraction form
    20,231.92/27,918.29 = 11,279.26/x
  3. Step 3: Cross multiply
    20,231.92x = 27,918.29 × 11,279.26
  4. Step 4: Simplify right side
    20,231.92x = 314,897,610.07
  5. Step 5: Solve for x
    x = 314,897,610.07/20,231.92
  6. Step 6: Final answer
    x = 15,564.40

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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.