Home / 20,171.14-27,837.20-11,218.81

Finding the Fourth Proportional to 20,171.14, 27,837.20 and 11,218.81

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Solution

The fourth proportional to 20,171.14, 27,837.20 and 11,218.81 is: 15,482.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,171.14 : 27,837.20 = 11,218.81 : x
  2. Step 2: Convert to fraction form
    20,171.14/27,837.20 = 11,218.81/x
  3. Step 3: Cross multiply
    20,171.14x = 27,837.20 × 11,218.81
  4. Step 4: Simplify right side
    20,171.14x = 312,300,257.73
  5. Step 5: Solve for x
    x = 312,300,257.73/20,171.14
  6. Step 6: Final answer
    x = 15,482.53

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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.