Home / 18,190.78-25,106.28-11,480.06

Finding the Fourth Proportional to 18,190.78, 25,106.28 and 11,480.06

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Solution

The fourth proportional to 18,190.78, 25,106.28 and 11,480.06 is: 15,844.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,190.78 : 25,106.28 = 11,480.06 : x
  2. Step 2: Convert to fraction form
    18,190.78/25,106.28 = 11,480.06/x
  3. Step 3: Cross multiply
    18,190.78x = 25,106.28 × 11,480.06
  4. Step 4: Simplify right side
    18,190.78x = 288,221,600.78
  5. Step 5: Solve for x
    x = 288,221,600.78/18,190.78
  6. Step 6: Final answer
    x = 15,844.38

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Half scale
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Double scale
Find fourth proportional to 18,191.78, 25,107.66 and 11,481.06
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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.