Home / 18,112.78-24,995.70-11,402.85

Finding the Fourth Proportional to 18,112.78, 24,995.70 and 11,402.85

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Solution

The fourth proportional to 18,112.78, 24,995.70 and 11,402.85 is: 15,735.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,112.78 : 24,995.70 = 11,402.85 : x
  2. Step 2: Convert to fraction form
    18,112.78/24,995.70 = 11,402.85/x
  3. Step 3: Cross multiply
    18,112.78x = 24,995.70 × 11,402.85
  4. Step 4: Simplify right side
    18,112.78x = 285,022,217.75
  5. Step 5: Solve for x
    x = 285,022,217.75/18,112.78
  6. Step 6: Final answer
    x = 15,735.97

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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.