Home / 20,086.39-27,719.72-11,012.28

Finding the Fourth Proportional to 20,086.39, 27,719.72 and 11,012.28

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Solution

The fourth proportional to 20,086.39, 27,719.72 and 11,012.28 is: 15,197.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,086.39 : 27,719.72 = 11,012.28 : x
  2. Step 2: Convert to fraction form
    20,086.39/27,719.72 = 11,012.28/x
  3. Step 3: Cross multiply
    20,086.39x = 27,719.72 × 11,012.28
  4. Step 4: Simplify right side
    20,086.39x = 305,257,318.16
  5. Step 5: Solve for x
    x = 305,257,318.16/20,086.39
  6. Step 6: Final answer
    x = 15,197.22

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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.