Home / 12,680.28-18,964.53-11,517.66

Finding the Fourth Proportional to 12,680.28, 18,964.53 and 11,517.66

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Solution

The fourth proportional to 12,680.28, 18,964.53 and 11,517.66 is: 17,225.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,680.28 : 18,964.53 = 11,517.66 : x
  2. Step 2: Convert to fraction form
    12,680.28/18,964.53 = 11,517.66/x
  3. Step 3: Cross multiply
    12,680.28x = 18,964.53 × 11,517.66
  4. Step 4: Simplify right side
    12,680.28x = 218,427,008.60
  5. Step 5: Solve for x
    x = 218,427,008.60/12,680.28
  6. Step 6: Final answer
    x = 17,225.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.