Home / 13,640.37-20,430.57-11,273.55

Finding the Fourth Proportional to 13,640.37, 20,430.57 and 11,273.55

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Solution

The fourth proportional to 13,640.37, 20,430.57 and 11,273.55 is: 16,885.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,640.37 : 20,430.57 = 11,273.55 : x
  2. Step 2: Convert to fraction form
    13,640.37/20,430.57 = 11,273.55/x
  3. Step 3: Cross multiply
    13,640.37x = 20,430.57 × 11,273.55
  4. Step 4: Simplify right side
    13,640.37x = 230,325,052.42
  5. Step 5: Solve for x
    x = 230,325,052.42/13,640.37
  6. Step 6: Final answer
    x = 16,885.54

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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.