Home / 30,160.68-41,620.74-18,221.92

Finding the Fourth Proportional to 30,160.68, 41,620.74 and 18,221.92

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Solution

The fourth proportional to 30,160.68, 41,620.74 and 18,221.92 is: 25,145.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,160.68 : 41,620.74 = 18,221.92 : x
  2. Step 2: Convert to fraction form
    30,160.68/41,620.74 = 18,221.92/x
  3. Step 3: Cross multiply
    30,160.68x = 41,620.74 × 18,221.92
  4. Step 4: Simplify right side
    30,160.68x = 758,409,794.62
  5. Step 5: Solve for x
    x = 758,409,794.62/30,160.68
  6. Step 6: Final answer
    x = 25,145.65

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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.