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Finding the Fourth Proportional to 11,639.84, 17,463 and 6,449.36

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Solution

The fourth proportional to 11,639.84, 17,463 and 6,449.36 is: 9,675.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,639.84 : 17,463 = 6,449.36 : x
  2. Step 2: Convert to fraction form
    11,639.84/17,463 = 6,449.36/x
  3. Step 3: Cross multiply
    11,639.84x = 17,463 × 6,449.36
  4. Step 4: Simplify right side
    11,639.84x = 112,625,173.68
  5. Step 5: Solve for x
    x = 112,625,173.68/11,639.84
  6. Step 6: Final answer
    x = 9,675.84

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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.