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Finding the Fourth Proportional to 15,067.84, 20,786.16 and 9,474.88

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Solution

The fourth proportional to 15,067.84, 20,786.16 and 9,474.88 is: 13,070.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,067.84 : 20,786.16 = 9,474.88 : x
  2. Step 2: Convert to fraction form
    15,067.84/20,786.16 = 9,474.88/x
  3. Step 3: Cross multiply
    15,067.84x = 20,786.16 × 9,474.88
  4. Step 4: Simplify right side
    15,067.84x = 196,946,371.66
  5. Step 5: Solve for x
    x = 196,946,371.66/15,067.84
  6. Step 6: Final answer
    x = 13,070.64

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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.