Home / 18,843.13-28,231.44-11,432.54

Finding the Fourth Proportional to 18,843.13, 28,231.44 and 11,432.54

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Solution

The fourth proportional to 18,843.13, 28,231.44 and 11,432.54 is: 17,128.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,843.13 : 28,231.44 = 11,432.54 : x
  2. Step 2: Convert to fraction form
    18,843.13/28,231.44 = 11,432.54/x
  3. Step 3: Cross multiply
    18,843.13x = 28,231.44 × 11,432.54
  4. Step 4: Simplify right side
    18,843.13x = 322,757,094.76
  5. Step 5: Solve for x
    x = 322,757,094.76/18,843.13
  6. Step 6: Final answer
    x = 17,128.63

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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.