Home / 13,399.76-20,091.96-5,182.16

Finding the Fourth Proportional to 13,399.76, 20,091.96 and 5,182.16

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Solution

The fourth proportional to 13,399.76, 20,091.96 and 5,182.16 is: 7,770.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,399.76 : 20,091.96 = 5,182.16 : x
  2. Step 2: Convert to fraction form
    13,399.76/20,091.96 = 5,182.16/x
  3. Step 3: Cross multiply
    13,399.76x = 20,091.96 × 5,182.16
  4. Step 4: Simplify right side
    13,399.76x = 104,119,751.43
  5. Step 5: Solve for x
    x = 104,119,751.43/13,399.76
  6. Step 6: Final answer
    x = 7,770.27

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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.