Home / 30,279.20-41,786.26-18,945.06

Finding the Fourth Proportional to 30,279.20, 41,786.26 and 18,945.06

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Solution

The fourth proportional to 30,279.20, 41,786.26 and 18,945.06 is: 26,144.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,279.20 : 41,786.26 = 18,945.06 : x
  2. Step 2: Convert to fraction form
    30,279.20/41,786.26 = 18,945.06/x
  3. Step 3: Cross multiply
    30,279.20x = 41,786.26 × 18,945.06
  4. Step 4: Simplify right side
    30,279.20x = 791,643,202.88
  5. Step 5: Solve for x
    x = 791,643,202.88/30,279.20
  6. Step 6: Final answer
    x = 26,144.79

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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.