Home / 20,628.21-28,467.03-11,196.75

Finding the Fourth Proportional to 20,628.21, 28,467.03 and 11,196.75

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Solution

The fourth proportional to 20,628.21, 28,467.03 and 11,196.75 is: 15,451.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,628.21 : 28,467.03 = 11,196.75 : x
  2. Step 2: Convert to fraction form
    20,628.21/28,467.03 = 11,196.75/x
  3. Step 3: Cross multiply
    20,628.21x = 28,467.03 × 11,196.75
  4. Step 4: Simplify right side
    20,628.21x = 318,738,218.15
  5. Step 5: Solve for x
    x = 318,738,218.15/20,628.21
  6. Step 6: Final answer
    x = 15,451.57

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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.