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Finding the Fourth Proportional to 17,343.90, 25,979.40 and 14,427.90

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Solution

The fourth proportional to 17,343.90, 25,979.40 and 14,427.90 is: 21,611.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,343.90 : 25,979.40 = 14,427.90 : x
  2. Step 2: Convert to fraction form
    17,343.90/25,979.40 = 14,427.90/x
  3. Step 3: Cross multiply
    17,343.90x = 25,979.40 × 14,427.90
  4. Step 4: Simplify right side
    17,343.90x = 374,828,185.26
  5. Step 5: Solve for x
    x = 374,828,185.26/17,343.90
  6. Step 6: Final answer
    x = 21,611.53

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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.