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Finding the Fourth Proportional to 43,355.96, 65,033.96 and 12,191.21

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Solution

The fourth proportional to 43,355.96, 65,033.96 and 12,191.21 is: 18,286.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,355.96 : 65,033.96 = 12,191.21 : x
  2. Step 2: Convert to fraction form
    43,355.96/65,033.96 = 12,191.21/x
  3. Step 3: Cross multiply
    43,355.96x = 65,033.96 × 12,191.21
  4. Step 4: Simplify right side
    43,355.96x = 792,842,277.37
  5. Step 5: Solve for x
    x = 792,842,277.37/43,355.96
  6. Step 6: Final answer
    x = 18,286.81

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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.