Home / 13,945.37-20,912.85-5,622.57

Finding the Fourth Proportional to 13,945.37, 20,912.85 and 5,622.57

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Solution

The fourth proportional to 13,945.37, 20,912.85 and 5,622.57 is: 8,431.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,945.37 : 20,912.85 = 5,622.57 : x
  2. Step 2: Convert to fraction form
    13,945.37/20,912.85 = 5,622.57/x
  3. Step 3: Cross multiply
    13,945.37x = 20,912.85 × 5,622.57
  4. Step 4: Simplify right side
    13,945.37x = 117,583,963.02
  5. Step 5: Solve for x
    x = 117,583,963.02/13,945.37
  6. Step 6: Final answer
    x = 8,431.76

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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.