Home / 27,786.75-38,338.14-15,845.73

Finding the Fourth Proportional to 27,786.75, 38,338.14 and 15,845.73

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Solution

The fourth proportional to 27,786.75, 38,338.14 and 15,845.73 is: 21,862.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,786.75 : 38,338.14 = 15,845.73 : x
  2. Step 2: Convert to fraction form
    27,786.75/38,338.14 = 15,845.73/x
  3. Step 3: Cross multiply
    27,786.75x = 38,338.14 × 15,845.73
  4. Step 4: Simplify right side
    27,786.75x = 607,495,815.14
  5. Step 5: Solve for x
    x = 607,495,815.14/27,786.75
  6. Step 6: Final answer
    x = 21,862.79

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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.