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Finding the Fourth Proportional to 17,103.40, 25,611.90 and 13,647.40

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Solution

The fourth proportional to 17,103.40, 25,611.90 and 13,647.40 is: 20,436.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,103.40 : 25,611.90 = 13,647.40 : x
  2. Step 2: Convert to fraction form
    17,103.40/25,611.90 = 13,647.40/x
  3. Step 3: Cross multiply
    17,103.40x = 25,611.90 × 13,647.40
  4. Step 4: Simplify right side
    17,103.40x = 349,535,844.06
  5. Step 5: Solve for x
    x = 349,535,844.06/17,103.40
  6. Step 6: Final answer
    x = 20,436.63

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.