Home / 15,286.32-21,103.84-11,694.64

Finding the Fourth Proportional to 15,286.32, 21,103.84 and 11,694.64

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Solution

The fourth proportional to 15,286.32, 21,103.84 and 11,694.64 is: 16,145.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,286.32 : 21,103.84 = 11,694.64 : x
  2. Step 2: Convert to fraction form
    15,286.32/21,103.84 = 11,694.64/x
  3. Step 3: Cross multiply
    15,286.32x = 21,103.84 × 11,694.64
  4. Step 4: Simplify right side
    15,286.32x = 246,801,811.42
  5. Step 5: Solve for x
    x = 246,801,811.42/15,286.32
  6. Step 6: Final answer
    x = 16,145.27

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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.