Home / 12,286.88-16,956.36-6,981.92

Finding the Fourth Proportional to 12,286.88, 16,956.36 and 6,981.92

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Solution

The fourth proportional to 12,286.88, 16,956.36 and 6,981.92 is: 9,635.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,286.88 : 16,956.36 = 6,981.92 : x
  2. Step 2: Convert to fraction form
    12,286.88/16,956.36 = 6,981.92/x
  3. Step 3: Cross multiply
    12,286.88x = 16,956.36 × 6,981.92
  4. Step 4: Simplify right side
    12,286.88x = 118,387,949.01
  5. Step 5: Solve for x
    x = 118,387,949.01/12,286.88
  6. Step 6: Final answer
    x = 9,635.31

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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.