Home / 20,112.67-27,755.49-11,730.79

Finding the Fourth Proportional to 20,112.67, 27,755.49 and 11,730.79

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Solution

The fourth proportional to 20,112.67, 27,755.49 and 11,730.79 is: 16,188.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,112.67 : 27,755.49 = 11,730.79 : x
  2. Step 2: Convert to fraction form
    20,112.67/27,755.49 = 11,730.79/x
  3. Step 3: Cross multiply
    20,112.67x = 27,755.49 × 11,730.79
  4. Step 4: Simplify right side
    20,112.67x = 325,593,824.54
  5. Step 5: Solve for x
    x = 325,593,824.54/20,112.67
  6. Step 6: Final answer
    x = 16,188.49

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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.