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Finding the Fourth Proportional to 13,079, 19,618.50 and 3,351

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Solution

The fourth proportional to 13,079, 19,618.50 and 3,351 is: 5,026.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,079 : 19,618.50 = 3,351 : x
  2. Step 2: Convert to fraction form
    13,079/19,618.50 = 3,351/x
  3. Step 3: Cross multiply
    13,079x = 19,618.50 × 3,351
  4. Step 4: Simplify right side
    13,079x = 65,741,593.50
  5. Step 5: Solve for x
    x = 65,741,593.50/13,079
  6. Step 6: Final answer
    x = 5,026.50

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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.