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Finding the Fourth Proportional to 18,694.84, 25,775.48 and 11,969.42

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Solution

The fourth proportional to 18,694.84, 25,775.48 and 11,969.42 is: 16,502.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,694.84 : 25,775.48 = 11,969.42 : x
  2. Step 2: Convert to fraction form
    18,694.84/25,775.48 = 11,969.42/x
  3. Step 3: Cross multiply
    18,694.84x = 25,775.48 × 11,969.42
  4. Step 4: Simplify right side
    18,694.84x = 308,517,545.82
  5. Step 5: Solve for x
    x = 308,517,545.82/18,694.84
  6. Step 6: Final answer
    x = 16,502.82

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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.