Home / 27,745.68-38,289.72-15,171.36

Finding the Fourth Proportional to 27,745.68, 38,289.72 and 15,171.36

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Solution

The fourth proportional to 27,745.68, 38,289.72 and 15,171.36 is: 20,936.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,745.68 : 38,289.72 = 15,171.36 : x
  2. Step 2: Convert to fraction form
    27,745.68/38,289.72 = 15,171.36/x
  3. Step 3: Cross multiply
    27,745.68x = 38,289.72 × 15,171.36
  4. Step 4: Simplify right side
    27,745.68x = 580,907,126.42
  5. Step 5: Solve for x
    x = 580,907,126.42/27,745.68
  6. Step 6: Final answer
    x = 20,936.85

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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.