Home / 20,171.05-27,833.76-11,218.01

Finding the Fourth Proportional to 20,171.05, 27,833.76 and 11,218.01

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Solution

The fourth proportional to 20,171.05, 27,833.76 and 11,218.01 is: 15,479.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,171.05 : 27,833.76 = 11,218.01 : x
  2. Step 2: Convert to fraction form
    20,171.05/27,833.76 = 11,218.01/x
  3. Step 3: Cross multiply
    20,171.05x = 27,833.76 × 11,218.01
  4. Step 4: Simplify right side
    20,171.05x = 312,239,258.85
  5. Step 5: Solve for x
    x = 312,239,258.85/20,171.05
  6. Step 6: Final answer
    x = 15,479.58

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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.