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Finding the Fourth Proportional to 11,266.80, 16,867.80 and 10,100.40

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Solution

The fourth proportional to 11,266.80, 16,867.80 and 10,100.40 is: 15,121.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,266.80 : 16,867.80 = 10,100.40 : x
  2. Step 2: Convert to fraction form
    11,266.80/16,867.80 = 10,100.40/x
  3. Step 3: Cross multiply
    11,266.80x = 16,867.80 × 10,100.40
  4. Step 4: Simplify right side
    11,266.80x = 170,371,527.12
  5. Step 5: Solve for x
    x = 170,371,527.12/11,266.80
  6. Step 6: Final answer
    x = 15,121.55

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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.