Home / 31,771.85-43,847.22-18,343.67

Finding the Fourth Proportional to 31,771.85, 43,847.22 and 18,343.67

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Solution

The fourth proportional to 31,771.85, 43,847.22 and 18,343.67 is: 25,315.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,771.85 : 43,847.22 = 18,343.67 : x
  2. Step 2: Convert to fraction form
    31,771.85/43,847.22 = 18,343.67/x
  3. Step 3: Cross multiply
    31,771.85x = 43,847.22 × 18,343.67
  4. Step 4: Simplify right side
    31,771.85x = 804,318,783.65
  5. Step 5: Solve for x
    x = 804,318,783.65/31,771.85
  6. Step 6: Final answer
    x = 25,315.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.