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Finding the Fourth Proportional to 38,662.60, 57,993.12 and 12,367.34

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Solution

The fourth proportional to 38,662.60, 57,993.12 and 12,367.34 is: 18,550.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,662.60 : 57,993.12 = 12,367.34 : x
  2. Step 2: Convert to fraction form
    38,662.60/57,993.12 = 12,367.34/x
  3. Step 3: Cross multiply
    38,662.60x = 57,993.12 × 12,367.34
  4. Step 4: Simplify right side
    38,662.60x = 717,220,632.70
  5. Step 5: Solve for x
    x = 717,220,632.70/38,662.60
  6. Step 6: Final answer
    x = 18,550.76

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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.