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Finding the Fourth Proportional to 14,589, 21,886.74 and 5,355

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Solution

The fourth proportional to 14,589, 21,886.74 and 5,355 is: 8,033.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,589 : 21,886.74 = 5,355 : x
  2. Step 2: Convert to fraction form
    14,589/21,886.74 = 5,355/x
  3. Step 3: Cross multiply
    14,589x = 21,886.74 × 5,355
  4. Step 4: Simplify right side
    14,589x = 117,203,492.70
  5. Step 5: Solve for x
    x = 117,203,492.70/14,589
  6. Step 6: Final answer
    x = 8,033.69

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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.