Home / 20,112.68-27,755.54-11,160.18

Finding the Fourth Proportional to 20,112.68, 27,755.54 and 11,160.18

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Solution

The fourth proportional to 20,112.68, 27,755.54 and 11,160.18 is: 15,401.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,112.68 : 27,755.54 = 11,160.18 : x
  2. Step 2: Convert to fraction form
    20,112.68/27,755.54 = 11,160.18/x
  3. Step 3: Cross multiply
    20,112.68x = 27,755.54 × 11,160.18
  4. Step 4: Simplify right side
    20,112.68x = 309,756,822.40
  5. Step 5: Solve for x
    x = 309,756,822.40/20,112.68
  6. Step 6: Final answer
    x = 15,401.07

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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.