Home / 38,431.60-57,647.40-21,842.80

Finding the Fourth Proportional to 38,431.60, 57,647.40 and 21,842.80

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Solution

The fourth proportional to 38,431.60, 57,647.40 and 21,842.80 is: 32,764.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,431.60 : 57,647.40 = 21,842.80 : x
  2. Step 2: Convert to fraction form
    38,431.60/57,647.40 = 21,842.80/x
  3. Step 3: Cross multiply
    38,431.60x = 57,647.40 × 21,842.80
  4. Step 4: Simplify right side
    38,431.60x = 1,259,180,628.72
  5. Step 5: Solve for x
    x = 1,259,180,628.72/38,431.60
  6. Step 6: Final answer
    x = 32,764.20

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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.