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Finding the Fourth Proportional to 17,218.90, 25,791.90 and 11,948.23

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Solution

The fourth proportional to 17,218.90, 25,791.90 and 11,948.23 is: 17,897.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,218.90 : 25,791.90 = 11,948.23 : x
  2. Step 2: Convert to fraction form
    17,218.90/25,791.90 = 11,948.23/x
  3. Step 3: Cross multiply
    17,218.90x = 25,791.90 × 11,948.23
  4. Step 4: Simplify right side
    17,218.90x = 308,167,553.34
  5. Step 5: Solve for x
    x = 308,167,553.34/17,218.90
  6. Step 6: Final answer
    x = 17,897.05

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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.