Home / 20,745.27-28,652.38-15,105.24

Finding the Fourth Proportional to 20,745.27, 28,652.38 and 15,105.24

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Solution

The fourth proportional to 20,745.27, 28,652.38 and 15,105.24 is: 20,862.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,745.27 : 28,652.38 = 15,105.24 : x
  2. Step 2: Convert to fraction form
    20,745.27/28,652.38 = 15,105.24/x
  3. Step 3: Cross multiply
    20,745.27x = 28,652.38 × 15,105.24
  4. Step 4: Simplify right side
    20,745.27x = 432,801,076.47
  5. Step 5: Solve for x
    x = 432,801,076.47/20,745.27
  6. Step 6: Final answer
    x = 20,862.64

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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.