Home / 27,845.09-38,425.75-15,745.38

Finding the Fourth Proportional to 27,845.09, 38,425.75 and 15,745.38

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Solution

The fourth proportional to 27,845.09, 38,425.75 and 15,745.38 is: 21,728.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,845.09 : 38,425.75 = 15,745.38 : x
  2. Step 2: Convert to fraction form
    27,845.09/38,425.75 = 15,745.38/x
  3. Step 3: Cross multiply
    27,845.09x = 38,425.75 × 15,745.38
  4. Step 4: Simplify right side
    27,845.09x = 605,028,035.54
  5. Step 5: Solve for x
    x = 605,028,035.54/27,845.09
  6. Step 6: Final answer
    x = 21,728.36

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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.