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Finding the Fourth Proportional to 12,768.63, 19,136.76 and 5,741.13

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Solution

The fourth proportional to 12,768.63, 19,136.76 and 5,741.13 is: 8,604.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,768.63 : 19,136.76 = 5,741.13 : x
  2. Step 2: Convert to fraction form
    12,768.63/19,136.76 = 5,741.13/x
  3. Step 3: Cross multiply
    12,768.63x = 19,136.76 × 5,741.13
  4. Step 4: Simplify right side
    12,768.63x = 109,866,626.94
  5. Step 5: Solve for x
    x = 109,866,626.94/12,768.63
  6. Step 6: Final answer
    x = 8,604.42

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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.