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Finding the Fourth Proportional to 18,682.91, 25,767.84 and 11,969.16

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Solution

The fourth proportional to 18,682.91, 25,767.84 and 11,969.16 is: 16,508.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,682.91 : 25,767.84 = 11,969.16 : x
  2. Step 2: Convert to fraction form
    18,682.91/25,767.84 = 11,969.16/x
  3. Step 3: Cross multiply
    18,682.91x = 25,767.84 × 11,969.16
  4. Step 4: Simplify right side
    18,682.91x = 308,419,461.92
  5. Step 5: Solve for x
    x = 308,419,461.92/18,682.91
  6. Step 6: Final answer
    x = 16,508.10

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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.