Home / 43,825.20-65,662.20-20,403.60

Finding the Fourth Proportional to 43,825.20, 65,662.20 and 20,403.60

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Solution

The fourth proportional to 43,825.20, 65,662.20 and 20,403.60 is: 30,570.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,825.20 : 65,662.20 = 20,403.60 : x
  2. Step 2: Convert to fraction form
    43,825.20/65,662.20 = 20,403.60/x
  3. Step 3: Cross multiply
    43,825.20x = 65,662.20 × 20,403.60
  4. Step 4: Simplify right side
    43,825.20x = 1,339,745,263.92
  5. Step 5: Solve for x
    x = 1,339,745,263.92/43,825.20
  6. Step 6: Final answer
    x = 30,570.20

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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.