Home / 30,221.90-41,699.88-18,286.15

Finding the Fourth Proportional to 30,221.90, 41,699.88 and 18,286.15

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Solution

The fourth proportional to 30,221.90, 41,699.88 and 18,286.15 is: 25,231.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,221.90 : 41,699.88 = 18,286.15 : x
  2. Step 2: Convert to fraction form
    30,221.90/41,699.88 = 18,286.15/x
  3. Step 3: Cross multiply
    30,221.90x = 41,699.88 × 18,286.15
  4. Step 4: Simplify right side
    30,221.90x = 762,529,960.73
  5. Step 5: Solve for x
    x = 762,529,960.73/30,221.90
  6. Step 6: Final answer
    x = 25,231.04

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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.