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Finding the Fourth Proportional to 12,230.49, 16,878.07 and 7,194.72

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Solution

The fourth proportional to 12,230.49, 16,878.07 and 7,194.72 is: 9,928.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,230.49 : 16,878.07 = 7,194.72 : x
  2. Step 2: Convert to fraction form
    12,230.49/16,878.07 = 7,194.72/x
  3. Step 3: Cross multiply
    12,230.49x = 16,878.07 × 7,194.72
  4. Step 4: Simplify right side
    12,230.49x = 121,433,060.08
  5. Step 5: Solve for x
    x = 121,433,060.08/12,230.49
  6. Step 6: Final answer
    x = 9,928.71

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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.