Home / 13,600.80-20,391.60-5,277.60

Finding the Fourth Proportional to 13,600.80, 20,391.60 and 5,277.60

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Solution

The fourth proportional to 13,600.80, 20,391.60 and 5,277.60 is: 7,912.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,600.80 : 20,391.60 = 5,277.60 : x
  2. Step 2: Convert to fraction form
    13,600.80/20,391.60 = 5,277.60/x
  3. Step 3: Cross multiply
    13,600.80x = 20,391.60 × 5,277.60
  4. Step 4: Simplify right side
    13,600.80x = 107,618,708.16
  5. Step 5: Solve for x
    x = 107,618,708.16/13,600.80
  6. Step 6: Final answer
    x = 7,912.67

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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.