Home / 38,428.86-57,645.72-12,134.64

Finding the Fourth Proportional to 38,428.86, 57,645.72 and 12,134.64

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Solution

The fourth proportional to 38,428.86, 57,645.72 and 12,134.64 is: 18,202.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,428.86 : 57,645.72 = 12,134.64 : x
  2. Step 2: Convert to fraction form
    38,428.86/57,645.72 = 12,134.64/x
  3. Step 3: Cross multiply
    38,428.86x = 57,645.72 × 12,134.64
  4. Step 4: Simplify right side
    38,428.86x = 699,510,059.74
  5. Step 5: Solve for x
    x = 699,510,059.74/38,428.86
  6. Step 6: Final answer
    x = 18,202.73

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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.