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Finding the Fourth Proportional to 17,191, 25,781.10 and 6,660.30

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Solution

The fourth proportional to 17,191, 25,781.10 and 6,660.30 is: 9,988.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,191 : 25,781.10 = 6,660.30 : x
  2. Step 2: Convert to fraction form
    17,191/25,781.10 = 6,660.30/x
  3. Step 3: Cross multiply
    17,191x = 25,781.10 × 6,660.30
  4. Step 4: Simplify right side
    17,191x = 171,709,860.33
  5. Step 5: Solve for x
    x = 171,709,860.33/17,191
  6. Step 6: Final answer
    x = 9,988.36

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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.