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Finding the Fourth Proportional to 43,474.50, 65,211.75 and 12,309.75

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Solution

The fourth proportional to 43,474.50, 65,211.75 and 12,309.75 is: 18,464.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,474.50 : 65,211.75 = 12,309.75 : x
  2. Step 2: Convert to fraction form
    43,474.50/65,211.75 = 12,309.75/x
  3. Step 3: Cross multiply
    43,474.50x = 65,211.75 × 12,309.75
  4. Step 4: Simplify right side
    43,474.50x = 802,740,339.56
  5. Step 5: Solve for x
    x = 802,740,339.56/43,474.50
  6. Step 6: Final answer
    x = 18,464.63

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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.