Home / 30,161.34-41,620.77-18,217.62

Finding the Fourth Proportional to 30,161.34, 41,620.77 and 18,217.62

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Solution

The fourth proportional to 30,161.34, 41,620.77 and 18,217.62 is: 25,139.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,161.34 : 41,620.77 = 18,217.62 : x
  2. Step 2: Convert to fraction form
    30,161.34/41,620.77 = 18,217.62/x
  3. Step 3: Cross multiply
    30,161.34x = 41,620.77 × 18,217.62
  4. Step 4: Simplify right side
    30,161.34x = 758,231,371.97
  5. Step 5: Solve for x
    x = 758,231,371.97/30,161.34
  6. Step 6: Final answer
    x = 25,139.18

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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.