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Finding the Fourth Proportional to 18,504.90, 27,720.90 and 17,192.70

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Solution

The fourth proportional to 18,504.90, 27,720.90 and 17,192.70 is: 25,755.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,504.90 : 27,720.90 = 17,192.70 : x
  2. Step 2: Convert to fraction form
    18,504.90/27,720.90 = 17,192.70/x
  3. Step 3: Cross multiply
    18,504.90x = 27,720.90 × 17,192.70
  4. Step 4: Simplify right side
    18,504.90x = 476,597,117.43
  5. Step 5: Solve for x
    x = 476,597,117.43/18,504.90
  6. Step 6: Final answer
    x = 25,755.18

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1.5x scale

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.