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Finding the Fourth Proportional to 18,449.67, 25,451.90 and 12,076.39

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Solution

The fourth proportional to 18,449.67, 25,451.90 and 12,076.39 is: 16,659.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,449.67 : 25,451.90 = 12,076.39 : x
  2. Step 2: Convert to fraction form
    18,449.67/25,451.90 = 12,076.39/x
  3. Step 3: Cross multiply
    18,449.67x = 25,451.90 × 12,076.39
  4. Step 4: Simplify right side
    18,449.67x = 307,366,943.38
  5. Step 5: Solve for x
    x = 307,366,943.38/18,449.67
  6. Step 6: Final answer
    x = 16,659.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.