Home / 43,778.98-65,661.94-12,185.74

Finding the Fourth Proportional to 43,778.98, 65,661.94 and 12,185.74

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Solution

The fourth proportional to 43,778.98, 65,661.94 and 12,185.74 is: 18,276.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,778.98 : 65,661.94 = 12,185.74 : x
  2. Step 2: Convert to fraction form
    43,778.98/65,661.94 = 12,185.74/x
  3. Step 3: Cross multiply
    43,778.98x = 65,661.94 × 12,185.74
  4. Step 4: Simplify right side
    43,778.98x = 800,139,426.05
  5. Step 5: Solve for x
    x = 800,139,426.05/43,778.98
  6. Step 6: Final answer
    x = 18,276.79

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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.