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Finding the Fourth Proportional to 12,290.42, 16,960.74 and 6,701.42

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Solution

The fourth proportional to 12,290.42, 16,960.74 and 6,701.42 is: 9,247.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,290.42 : 16,960.74 = 6,701.42 : x
  2. Step 2: Convert to fraction form
    12,290.42/16,960.74 = 6,701.42/x
  3. Step 3: Cross multiply
    12,290.42x = 16,960.74 × 6,701.42
  4. Step 4: Simplify right side
    12,290.42x = 113,661,042.25
  5. Step 5: Solve for x
    x = 113,661,042.25/12,290.42
  6. Step 6: Final answer
    x = 9,247.94

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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.