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Finding the Fourth Proportional to 17,172.72, 25,742.03 and 8,151.03

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Solution

The fourth proportional to 17,172.72, 25,742.03 and 8,151.03 is: 12,218.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,172.72 : 25,742.03 = 8,151.03 : x
  2. Step 2: Convert to fraction form
    17,172.72/25,742.03 = 8,151.03/x
  3. Step 3: Cross multiply
    17,172.72x = 25,742.03 × 8,151.03
  4. Step 4: Simplify right side
    17,172.72x = 209,823,970.49
  5. Step 5: Solve for x
    x = 209,823,970.49/17,172.72
  6. Step 6: Final answer
    x = 12,218.45

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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.