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Finding the Fourth Proportional to 12,286.89, 16,955.93 and 6,697.89

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Solution

The fourth proportional to 12,286.89, 16,955.93 and 6,697.89 is: 9,243.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,286.89 : 16,955.93 = 6,697.89 : x
  2. Step 2: Convert to fraction form
    12,286.89/16,955.93 = 6,697.89/x
  3. Step 3: Cross multiply
    12,286.89x = 16,955.93 × 6,697.89
  4. Step 4: Simplify right side
    12,286.89x = 113,568,970.73
  5. Step 5: Solve for x
    x = 113,568,970.73/12,286.89
  6. Step 6: Final answer
    x = 9,243.10

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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.