Home / 38,520.20-57,718.20-21,830.60

Finding the Fourth Proportional to 38,520.20, 57,718.20 and 21,830.60

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Solution

The fourth proportional to 38,520.20, 57,718.20 and 21,830.60 is: 32,710.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,520.20 : 57,718.20 = 21,830.60 : x
  2. Step 2: Convert to fraction form
    38,520.20/57,718.20 = 21,830.60/x
  3. Step 3: Cross multiply
    38,520.20x = 57,718.20 × 21,830.60
  4. Step 4: Simplify right side
    38,520.20x = 1,260,022,936.92
  5. Step 5: Solve for x
    x = 1,260,022,936.92/38,520.20
  6. Step 6: Final answer
    x = 32,710.71

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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.