Home / 20,628.98-28,467.56-11,197.54

Finding the Fourth Proportional to 20,628.98, 28,467.56 and 11,197.54

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Solution

The fourth proportional to 20,628.98, 28,467.56 and 11,197.54 is: 15,452.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,628.98 : 28,467.56 = 11,197.54 : x
  2. Step 2: Convert to fraction form
    20,628.98/28,467.56 = 11,197.54/x
  3. Step 3: Cross multiply
    20,628.98x = 28,467.56 × 11,197.54
  4. Step 4: Simplify right side
    20,628.98x = 318,766,641.80
  5. Step 5: Solve for x
    x = 318,766,641.80/20,628.98
  6. Step 6: Final answer
    x = 15,452.37

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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.