Home / 17,128.06-23,640.72-11,149.36

Finding the Fourth Proportional to 17,128.06, 23,640.72 and 11,149.36

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Solution

The fourth proportional to 17,128.06, 23,640.72 and 11,149.36 is: 15,388.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,128.06 : 23,640.72 = 11,149.36 : x
  2. Step 2: Convert to fraction form
    17,128.06/23,640.72 = 11,149.36/x
  3. Step 3: Cross multiply
    17,128.06x = 23,640.72 × 11,149.36
  4. Step 4: Simplify right side
    17,128.06x = 263,578,897.94
  5. Step 5: Solve for x
    x = 263,578,897.94/17,128.06
  6. Step 6: Final answer
    x = 15,388.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.