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Finding the Fourth Proportional to 11,136.80, 16,743.54 and 8,960.78

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Solution

The fourth proportional to 11,136.80, 16,743.54 and 8,960.78 is: 13,472.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,136.80 : 16,743.54 = 8,960.78 : x
  2. Step 2: Convert to fraction form
    11,136.80/16,743.54 = 8,960.78/x
  3. Step 3: Cross multiply
    11,136.80x = 16,743.54 × 8,960.78
  4. Step 4: Simplify right side
    11,136.80x = 150,035,178.36
  5. Step 5: Solve for x
    x = 150,035,178.36/11,136.80
  6. Step 6: Final answer
    x = 13,472.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.