Home / 20,277.15-27,982.16-11,324.78

Finding the Fourth Proportional to 20,277.15, 27,982.16 and 11,324.78

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Solution

The fourth proportional to 20,277.15, 27,982.16 and 11,324.78 is: 15,628.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,277.15 : 27,982.16 = 11,324.78 : x
  2. Step 2: Convert to fraction form
    20,277.15/27,982.16 = 11,324.78/x
  3. Step 3: Cross multiply
    20,277.15x = 27,982.16 × 11,324.78
  4. Step 4: Simplify right side
    20,277.15x = 316,891,694.33
  5. Step 5: Solve for x
    x = 316,891,694.33/20,277.15
  6. Step 6: Final answer
    x = 15,628.02

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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.