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Finding the Fourth Proportional to 18,655.43, 25,736.32 and 12,273.82

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Solution

The fourth proportional to 18,655.43, 25,736.32 and 12,273.82 is: 16,932.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,655.43 : 25,736.32 = 12,273.82 : x
  2. Step 2: Convert to fraction form
    18,655.43/25,736.32 = 12,273.82/x
  3. Step 3: Cross multiply
    18,655.43x = 25,736.32 × 12,273.82
  4. Step 4: Simplify right side
    18,655.43x = 315,882,959.14
  5. Step 5: Solve for x
    x = 315,882,959.14/18,655.43
  6. Step 6: Final answer
    x = 16,932.49

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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.