Home / 20,628.67-28,467.69-11,197.30

Finding the Fourth Proportional to 20,628.67, 28,467.69 and 11,197.30

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Solution

The fourth proportional to 20,628.67, 28,467.69 and 11,197.30 is: 15,452.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,628.67 : 28,467.69 = 11,197.30 : x
  2. Step 2: Convert to fraction form
    20,628.67/28,467.69 = 11,197.30/x
  3. Step 3: Cross multiply
    20,628.67x = 28,467.69 × 11,197.30
  4. Step 4: Simplify right side
    20,628.67x = 318,761,265.24
  5. Step 5: Solve for x
    x = 318,761,265.24/20,628.67
  6. Step 6: Final answer
    x = 15,452.34

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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.