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Finding the Fourth Proportional to 12,796.33, 19,198.87 and 7,808.70

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Solution

The fourth proportional to 12,796.33, 19,198.87 and 7,808.70 is: 11,715.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,796.33 : 19,198.87 = 7,808.70 : x
  2. Step 2: Convert to fraction form
    12,796.33/19,198.87 = 7,808.70/x
  3. Step 3: Cross multiply
    12,796.33x = 19,198.87 × 7,808.70
  4. Step 4: Simplify right side
    12,796.33x = 149,918,312.57
  5. Step 5: Solve for x
    x = 149,918,312.57/12,796.33
  6. Step 6: Final answer
    x = 11,715.73

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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.