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Finding the Fourth Proportional to 12,243.78, 16,896.54 and 6,654.78

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Solution

The fourth proportional to 12,243.78, 16,896.54 and 6,654.78 is: 9,183.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,243.78 : 16,896.54 = 6,654.78 : x
  2. Step 2: Convert to fraction form
    12,243.78/16,896.54 = 6,654.78/x
  3. Step 3: Cross multiply
    12,243.78x = 16,896.54 × 6,654.78
  4. Step 4: Simplify right side
    12,243.78x = 112,442,756.46
  5. Step 5: Solve for x
    x = 112,442,756.46/12,243.78
  6. Step 6: Final answer
    x = 9,183.66

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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.