Home / 20,112.14-27,754.98-11,159.93

Finding the Fourth Proportional to 20,112.14, 27,754.98 and 11,159.93

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Solution

The fourth proportional to 20,112.14, 27,754.98 and 11,159.93 is: 15,400.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,112.14 : 27,754.98 = 11,159.93 : x
  2. Step 2: Convert to fraction form
    20,112.14/27,754.98 = 11,159.93/x
  3. Step 3: Cross multiply
    20,112.14x = 27,754.98 × 11,159.93
  4. Step 4: Simplify right side
    20,112.14x = 309,743,633.95
  5. Step 5: Solve for x
    x = 309,743,633.95/20,112.14
  6. Step 6: Final answer
    x = 15,400.83

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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.