Home / 20,069.20-30,105.26-6,921.40

Finding the Fourth Proportional to 20,069.20, 30,105.26 and 6,921.40

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Solution

The fourth proportional to 20,069.20, 30,105.26 and 6,921.40 is: 10,382.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,069.20 : 30,105.26 = 6,921.40 : x
  2. Step 2: Convert to fraction form
    20,069.20/30,105.26 = 6,921.40/x
  3. Step 3: Cross multiply
    20,069.20x = 30,105.26 × 6,921.40
  4. Step 4: Simplify right side
    20,069.20x = 208,370,546.56
  5. Step 5: Solve for x
    x = 208,370,546.56/20,069.20
  6. Step 6: Final answer
    x = 10,382.60

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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.