Home / 20,749.26-28,634.40-11,318.70

Finding the Fourth Proportional to 20,749.26, 28,634.40 and 11,318.70

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Solution

The fourth proportional to 20,749.26, 28,634.40 and 11,318.70 is: 15,620.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,749.26 : 28,634.40 = 11,318.70 : x
  2. Step 2: Convert to fraction form
    20,749.26/28,634.40 = 11,318.70/x
  3. Step 3: Cross multiply
    20,749.26x = 28,634.40 × 11,318.70
  4. Step 4: Simplify right side
    20,749.26x = 324,104,183.28
  5. Step 5: Solve for x
    x = 324,104,183.28/20,749.26
  6. Step 6: Final answer
    x = 15,620.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.