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Finding the Fourth Proportional to 11,212, 15,472.56 and 6,244

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Solution

The fourth proportional to 11,212, 15,472.56 and 6,244 is: 8,616.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,212 : 15,472.56 = 6,244 : x
  2. Step 2: Convert to fraction form
    11,212/15,472.56 = 6,244/x
  3. Step 3: Cross multiply
    11,212x = 15,472.56 × 6,244
  4. Step 4: Simplify right side
    11,212x = 96,610,664.64
  5. Step 5: Solve for x
    x = 96,610,664.64/11,212
  6. Step 6: Final answer
    x = 8,616.72

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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.