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Finding the Fourth Proportional to 12,796.89, 19,212.99 and 8,838.85

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Solution

The fourth proportional to 12,796.89, 19,212.99 and 8,838.85 is: 13,270.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,796.89 : 19,212.99 = 8,838.85 : x
  2. Step 2: Convert to fraction form
    12,796.89/19,212.99 = 8,838.85/x
  3. Step 3: Cross multiply
    12,796.89x = 19,212.99 × 8,838.85
  4. Step 4: Simplify right side
    12,796.89x = 169,820,736.66
  5. Step 5: Solve for x
    x = 169,820,736.66/12,796.89
  6. Step 6: Final answer
    x = 13,270.47

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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.