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Finding the Fourth Proportional to 25,380.60, 38,070.90 and 12,234.30

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Solution

The fourth proportional to 25,380.60, 38,070.90 and 12,234.30 is: 18,351.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,380.60 : 38,070.90 = 12,234.30 : x
  2. Step 2: Convert to fraction form
    25,380.60/38,070.90 = 12,234.30/x
  3. Step 3: Cross multiply
    25,380.60x = 38,070.90 × 12,234.30
  4. Step 4: Simplify right side
    25,380.60x = 465,770,811.87
  5. Step 5: Solve for x
    x = 465,770,811.87/25,380.60
  6. Step 6: Final answer
    x = 18,351.45

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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.