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Finding the Fourth Proportional to 17,265.71, 25,897.81 and 5,419.21

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Solution

The fourth proportional to 17,265.71, 25,897.81 and 5,419.21 is: 8,128.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,265.71 : 25,897.81 = 5,419.21 : x
  2. Step 2: Convert to fraction form
    17,265.71/25,897.81 = 5,419.21/x
  3. Step 3: Cross multiply
    17,265.71x = 25,897.81 × 5,419.21
  4. Step 4: Simplify right side
    17,265.71x = 140,345,592.64
  5. Step 5: Solve for x
    x = 140,345,592.64/17,265.71
  6. Step 6: Final answer
    x = 8,128.57

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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.