Home / 29,485.20-40,620.36-20,517.30

Finding the Fourth Proportional to 29,485.20, 40,620.36 and 20,517.30

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Solution

The fourth proportional to 29,485.20, 40,620.36 and 20,517.30 is: 28,265.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,485.20 : 40,620.36 = 20,517.30 : x
  2. Step 2: Convert to fraction form
    29,485.20/40,620.36 = 20,517.30/x
  3. Step 3: Cross multiply
    29,485.20x = 40,620.36 × 20,517.30
  4. Step 4: Simplify right side
    29,485.20x = 833,420,112.23
  5. Step 5: Solve for x
    x = 833,420,112.23/29,485.20
  6. Step 6: Final answer
    x = 28,265.71

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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.