Home / 18,926.82-26,121.15-12,209.76

Finding the Fourth Proportional to 18,926.82, 26,121.15 and 12,209.76

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Solution

The fourth proportional to 18,926.82, 26,121.15 and 12,209.76 is: 16,850.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,926.82 : 26,121.15 = 12,209.76 : x
  2. Step 2: Convert to fraction form
    18,926.82/26,121.15 = 12,209.76/x
  3. Step 3: Cross multiply
    18,926.82x = 26,121.15 × 12,209.76
  4. Step 4: Simplify right side
    18,926.82x = 318,932,972.42
  5. Step 5: Solve for x
    x = 318,932,972.42/18,926.82
  6. Step 6: Final answer
    x = 16,850.85

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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.