Home / 20,422.60-30,626.70-9,334.60

Finding the Fourth Proportional to 20,422.60, 30,626.70 and 9,334.60

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Solution

The fourth proportional to 20,422.60, 30,626.70 and 9,334.60 is: 13,998.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,422.60 : 30,626.70 = 9,334.60 : x
  2. Step 2: Convert to fraction form
    20,422.60/30,626.70 = 9,334.60/x
  3. Step 3: Cross multiply
    20,422.60x = 30,626.70 × 9,334.60
  4. Step 4: Simplify right side
    20,422.60x = 285,887,993.82
  5. Step 5: Solve for x
    x = 285,887,993.82/20,422.60
  6. Step 6: Final answer
    x = 13,998.61

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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.