Home / 20,185.83-30,279.79-6,144.75

Finding the Fourth Proportional to 20,185.83, 30,279.79 and 6,144.75

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Solution

The fourth proportional to 20,185.83, 30,279.79 and 6,144.75 is: 9,217.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,185.83 : 30,279.79 = 6,144.75 : x
  2. Step 2: Convert to fraction form
    20,185.83/30,279.79 = 6,144.75/x
  3. Step 3: Cross multiply
    20,185.83x = 30,279.79 × 6,144.75
  4. Step 4: Simplify right side
    20,185.83x = 186,061,739.60
  5. Step 5: Solve for x
    x = 186,061,739.60/20,185.83
  6. Step 6: Final answer
    x = 9,217.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.