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Finding the Fourth Proportional to 12,136.72, 16,733.64 and 7,937.68

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Solution

The fourth proportional to 12,136.72, 16,733.64 and 7,937.68 is: 10,944.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,136.72 : 16,733.64 = 7,937.68 : x
  2. Step 2: Convert to fraction form
    12,136.72/16,733.64 = 7,937.68/x
  3. Step 3: Cross multiply
    12,136.72x = 16,733.64 × 7,937.68
  4. Step 4: Simplify right side
    12,136.72x = 132,826,279.56
  5. Step 5: Solve for x
    x = 132,826,279.56/12,136.72
  6. Step 6: Final answer
    x = 10,944.17

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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.