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Finding the Fourth Proportional to 18,136.76, 27,212.94 and 9,377.82

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Solution

The fourth proportional to 18,136.76, 27,212.94 and 9,377.82 is: 14,070.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,136.76 : 27,212.94 = 9,377.82 : x
  2. Step 2: Convert to fraction form
    18,136.76/27,212.94 = 9,377.82/x
  3. Step 3: Cross multiply
    18,136.76x = 27,212.94 × 9,377.82
  4. Step 4: Simplify right side
    18,136.76x = 255,198,052.99
  5. Step 5: Solve for x
    x = 255,198,052.99/18,136.76
  6. Step 6: Final answer
    x = 14,070.77

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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.