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Finding the Fourth Proportional to 11,963.65, 16,504.91 and 7,713.78

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Solution

The fourth proportional to 11,963.65, 16,504.91 and 7,713.78 is: 10,641.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,963.65 : 16,504.91 = 7,713.78 : x
  2. Step 2: Convert to fraction form
    11,963.65/16,504.91 = 7,713.78/x
  3. Step 3: Cross multiply
    11,963.65x = 16,504.91 × 7,713.78
  4. Step 4: Simplify right side
    11,963.65x = 127,315,309.35
  5. Step 5: Solve for x
    x = 127,315,309.35/11,963.65
  6. Step 6: Final answer
    x = 10,641.85

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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.