Home / 20,080.82-27,710.83-11,129.16

Finding the Fourth Proportional to 20,080.82, 27,710.83 and 11,129.16

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Solution

The fourth proportional to 20,080.82, 27,710.83 and 11,129.16 is: 15,357.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,080.82 : 27,710.83 = 11,129.16 : x
  2. Step 2: Convert to fraction form
    20,080.82/27,710.83 = 11,129.16/x
  3. Step 3: Cross multiply
    20,080.82x = 27,710.83 × 11,129.16
  4. Step 4: Simplify right side
    20,080.82x = 308,398,378.63
  5. Step 5: Solve for x
    x = 308,398,378.63/20,080.82
  6. Step 6: Final answer
    x = 15,357.86

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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.