Home / 18,181.55-25,092.43-11,112.68

Finding the Fourth Proportional to 18,181.55, 25,092.43 and 11,112.68

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Solution

The fourth proportional to 18,181.55, 25,092.43 and 11,112.68 is: 15,336.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,181.55 : 25,092.43 = 11,112.68 : x
  2. Step 2: Convert to fraction form
    18,181.55/25,092.43 = 11,112.68/x
  3. Step 3: Cross multiply
    18,181.55x = 25,092.43 × 11,112.68
  4. Step 4: Simplify right side
    18,181.55x = 278,843,991.77
  5. Step 5: Solve for x
    x = 278,843,991.77/18,181.55
  6. Step 6: Final answer
    x = 15,336.65

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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.