Home / 38,455.20-57,620.70-21,765.60

Finding the Fourth Proportional to 38,455.20, 57,620.70 and 21,765.60

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Solution

The fourth proportional to 38,455.20, 57,620.70 and 21,765.60 is: 32,613.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,455.20 : 57,620.70 = 21,765.60 : x
  2. Step 2: Convert to fraction form
    38,455.20/57,620.70 = 21,765.60/x
  3. Step 3: Cross multiply
    38,455.20x = 57,620.70 × 21,765.60
  4. Step 4: Simplify right side
    38,455.20x = 1,254,149,107.92
  5. Step 5: Solve for x
    x = 1,254,149,107.92/38,455.20
  6. Step 6: Final answer
    x = 32,613.25

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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.