Home / 38,520.80-57,797.40-21,003.20

Finding the Fourth Proportional to 38,520.80, 57,797.40 and 21,003.20

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Solution

The fourth proportional to 38,520.80, 57,797.40 and 21,003.20 is: 31,513.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,520.80 : 57,797.40 = 21,003.20 : x
  2. Step 2: Convert to fraction form
    38,520.80/57,797.40 = 21,003.20/x
  3. Step 3: Cross multiply
    38,520.80x = 57,797.40 × 21,003.20
  4. Step 4: Simplify right side
    38,520.80x = 1,213,930,351.68
  5. Step 5: Solve for x
    x = 1,213,930,351.68/38,520.80
  6. Step 6: Final answer
    x = 31,513.63

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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.