Home / 20,112.39-27,754.38-11,160.27

Finding the Fourth Proportional to 20,112.39, 27,754.38 and 11,160.27

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Solution

The fourth proportional to 20,112.39, 27,754.38 and 11,160.27 is: 15,400.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,112.39 : 27,754.38 = 11,160.27 : x
  2. Step 2: Convert to fraction form
    20,112.39/27,754.38 = 11,160.27/x
  3. Step 3: Cross multiply
    20,112.39x = 27,754.38 × 11,160.27
  4. Step 4: Simplify right side
    20,112.39x = 309,746,374.48
  5. Step 5: Solve for x
    x = 309,746,374.48/20,112.39
  6. Step 6: Final answer
    x = 15,400.77

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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.