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Finding the Fourth Proportional to 12,809.44, 19,222.92 and 7,863.99

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Solution

The fourth proportional to 12,809.44, 19,222.92 and 7,863.99 is: 11,801.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,809.44 : 19,222.92 = 7,863.99 : x
  2. Step 2: Convert to fraction form
    12,809.44/19,222.92 = 7,863.99/x
  3. Step 3: Cross multiply
    12,809.44x = 19,222.92 × 7,863.99
  4. Step 4: Simplify right side
    12,809.44x = 151,168,778.56
  5. Step 5: Solve for x
    x = 151,168,778.56/12,809.44
  6. Step 6: Final answer
    x = 11,801.36

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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.