Home / 30,273.70-41,778.68-18,939.57

Finding the Fourth Proportional to 30,273.70, 41,778.68 and 18,939.57

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Solution

The fourth proportional to 30,273.70, 41,778.68 and 18,939.57 is: 26,137.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,273.70 : 41,778.68 = 18,939.57 : x
  2. Step 2: Convert to fraction form
    30,273.70/41,778.68 = 18,939.57/x
  3. Step 3: Cross multiply
    30,273.70x = 41,778.68 × 18,939.57
  4. Step 4: Simplify right side
    30,273.70x = 791,269,930.78
  5. Step 5: Solve for x
    x = 791,269,930.78/30,273.70
  6. Step 6: Final answer
    x = 26,137.21

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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.