Home / 13,806.37-20,709.42-9,147.25

Finding the Fourth Proportional to 13,806.37, 20,709.42 and 9,147.25

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Solution

The fourth proportional to 13,806.37, 20,709.42 and 9,147.25 is: 13,720.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,806.37 : 20,709.42 = 9,147.25 : x
  2. Step 2: Convert to fraction form
    13,806.37/20,709.42 = 9,147.25/x
  3. Step 3: Cross multiply
    13,806.37x = 20,709.42 × 9,147.25
  4. Step 4: Simplify right side
    13,806.37x = 189,434,242.10
  5. Step 5: Solve for x
    x = 189,434,242.10/13,806.37
  6. Step 6: Final answer
    x = 13,720.79

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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.