Home / 20,112.92-27,755.40-11,160.22

Finding the Fourth Proportional to 20,112.92, 27,755.40 and 11,160.22

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Solution

The fourth proportional to 20,112.92, 27,755.40 and 11,160.22 is: 15,400.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,112.92 : 27,755.40 = 11,160.22 : x
  2. Step 2: Convert to fraction form
    20,112.92/27,755.40 = 11,160.22/x
  3. Step 3: Cross multiply
    20,112.92x = 27,755.40 × 11,160.22
  4. Step 4: Simplify right side
    20,112.92x = 309,756,370.19
  5. Step 5: Solve for x
    x = 309,756,370.19/20,112.92
  6. Step 6: Final answer
    x = 15,400.87

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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.