Home / 38,486.48-57,731.34-12,190.64

Finding the Fourth Proportional to 38,486.48, 57,731.34 and 12,190.64

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Solution

The fourth proportional to 38,486.48, 57,731.34 and 12,190.64 is: 18,286.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,486.48 : 57,731.34 = 12,190.64 : x
  2. Step 2: Convert to fraction form
    38,486.48/57,731.34 = 12,190.64/x
  3. Step 3: Cross multiply
    38,486.48x = 57,731.34 × 12,190.64
  4. Step 4: Simplify right side
    38,486.48x = 703,781,982.66
  5. Step 5: Solve for x
    x = 703,781,982.66/38,486.48
  6. Step 6: Final answer
    x = 18,286.47

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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.