Home / 28,610.66-42,868.46-20,249.30

Finding the Fourth Proportional to 28,610.66, 42,868.46 and 20,249.30

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Solution

The fourth proportional to 28,610.66, 42,868.46 and 20,249.30 is: 30,340.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,610.66 : 42,868.46 = 20,249.30 : x
  2. Step 2: Convert to fraction form
    28,610.66/42,868.46 = 20,249.30/x
  3. Step 3: Cross multiply
    28,610.66x = 42,868.46 × 20,249.30
  4. Step 4: Simplify right side
    28,610.66x = 868,056,143.36
  5. Step 5: Solve for x
    x = 868,056,143.36/28,610.66
  6. Step 6: Final answer
    x = 30,340.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.