Home / 38,811.20-58,174.96-18,778.38

Finding the Fourth Proportional to 38,811.20, 58,174.96 and 18,778.38

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Solution

The fourth proportional to 38,811.20, 58,174.96 and 18,778.38 is: 28,147.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,811.20 : 58,174.96 = 18,778.38 : x
  2. Step 2: Convert to fraction form
    38,811.20/58,174.96 = 18,778.38/x
  3. Step 3: Cross multiply
    38,811.20x = 58,174.96 × 18,778.38
  4. Step 4: Simplify right side
    38,811.20x = 1,092,431,602.71
  5. Step 5: Solve for x
    x = 1,092,431,602.71/38,811.20
  6. Step 6: Final answer
    x = 28,147.33

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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.