Home / 43,912.85-65,861.83-12,315.65

Finding the Fourth Proportional to 43,912.85, 65,861.83 and 12,315.65

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Solution

The fourth proportional to 43,912.85, 65,861.83 and 12,315.65 is: 18,471.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,912.85 : 65,861.83 = 12,315.65 : x
  2. Step 2: Convert to fraction form
    43,912.85/65,861.83 = 12,315.65/x
  3. Step 3: Cross multiply
    43,912.85x = 65,861.83 × 12,315.65
  4. Step 4: Simplify right side
    43,912.85x = 811,131,246.64
  5. Step 5: Solve for x
    x = 811,131,246.64/43,912.85
  6. Step 6: Final answer
    x = 18,471.39

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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.