Home / 12,936.20-17,876.16-11,021

Finding the Fourth Proportional to 12,936.20, 17,876.16 and 11,021

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Solution

The fourth proportional to 12,936.20, 17,876.16 and 11,021 is: 15,229.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,936.20 : 17,876.16 = 11,021 : x
  2. Step 2: Convert to fraction form
    12,936.20/17,876.16 = 11,021/x
  3. Step 3: Cross multiply
    12,936.20x = 17,876.16 × 11,021
  4. Step 4: Simplify right side
    12,936.20x = 197,013,159.36
  5. Step 5: Solve for x
    x = 197,013,159.36/12,936.20
  6. Step 6: Final answer
    x = 15,229.60

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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.