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Finding the Fourth Proportional to 17,128.23, 25,691.97 and 7,894.23

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Solution

The fourth proportional to 17,128.23, 25,691.97 and 7,894.23 is: 11,841.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,128.23 : 25,691.97 = 7,894.23 : x
  2. Step 2: Convert to fraction form
    17,128.23/25,691.97 = 7,894.23/x
  3. Step 3: Cross multiply
    17,128.23x = 25,691.97 × 7,894.23
  4. Step 4: Simplify right side
    17,128.23x = 202,818,320.33
  5. Step 5: Solve for x
    x = 202,818,320.33/17,128.23
  6. Step 6: Final answer
    x = 11,841.17

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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.