Home / 20,112.73-27,755.14-11,160.04

Finding the Fourth Proportional to 20,112.73, 27,755.14 and 11,160.04

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Solution

The fourth proportional to 20,112.73, 27,755.14 and 11,160.04 is: 15,400.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,112.73 : 27,755.14 = 11,160.04 : x
  2. Step 2: Convert to fraction form
    20,112.73/27,755.14 = 11,160.04/x
  3. Step 3: Cross multiply
    20,112.73x = 27,755.14 × 11,160.04
  4. Step 4: Simplify right side
    20,112.73x = 309,748,472.61
  5. Step 5: Solve for x
    x = 309,748,472.61/20,112.73
  6. Step 6: Final answer
    x = 15,400.62

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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.