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Finding the Fourth Proportional to 25,445.70, 38,137.16 and 18,449.73

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Solution

The fourth proportional to 25,445.70, 38,137.16 and 18,449.73 is: 27,651.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,445.70 : 38,137.16 = 18,449.73 : x
  2. Step 2: Convert to fraction form
    25,445.70/38,137.16 = 18,449.73/x
  3. Step 3: Cross multiply
    25,445.70x = 38,137.16 × 18,449.73
  4. Step 4: Simplify right side
    25,445.70x = 703,620,351.09
  5. Step 5: Solve for x
    x = 703,620,351.09/25,445.70
  6. Step 6: Final answer
    x = 27,651.84

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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.