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Finding the Fourth Proportional to 12,994.08, 17,926.92 and 8,212.65

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Solution

The fourth proportional to 12,994.08, 17,926.92 and 8,212.65 is: 11,330.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,994.08 : 17,926.92 = 8,212.65 : x
  2. Step 2: Convert to fraction form
    12,994.08/17,926.92 = 8,212.65/x
  3. Step 3: Cross multiply
    12,994.08x = 17,926.92 × 8,212.65
  4. Step 4: Simplify right side
    12,994.08x = 147,227,519.54
  5. Step 5: Solve for x
    x = 147,227,519.54/12,994.08
  6. Step 6: Final answer
    x = 11,330.35

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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.