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Finding the Fourth Proportional to 13,173, 19,759.52 and 5,381.81

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Solution

The fourth proportional to 13,173, 19,759.52 and 5,381.81 is: 8,072.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,173 : 19,759.52 = 5,381.81 : x
  2. Step 2: Convert to fraction form
    13,173/19,759.52 = 5,381.81/x
  3. Step 3: Cross multiply
    13,173x = 19,759.52 × 5,381.81
  4. Step 4: Simplify right side
    13,173x = 106,341,856.62
  5. Step 5: Solve for x
    x = 106,341,856.62/13,173
  6. Step 6: Final answer
    x = 8,072.71

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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.