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Finding the Fourth Proportional to 12,212.67, 16,843.09 and 9,386.89

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Solution

The fourth proportional to 12,212.67, 16,843.09 and 9,386.89 is: 12,945.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,212.67 : 16,843.09 = 9,386.89 : x
  2. Step 2: Convert to fraction form
    12,212.67/16,843.09 = 9,386.89/x
  3. Step 3: Cross multiply
    12,212.67x = 16,843.09 × 9,386.89
  4. Step 4: Simplify right side
    12,212.67x = 158,104,185.12
  5. Step 5: Solve for x
    x = 158,104,185.12/12,212.67
  6. Step 6: Final answer
    x = 12,945.91

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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.