Home / 22,128.00-30,466.11-20,618.97

Finding the Fourth Proportional to 22,128.00, 30,466.11 and 20,618.97

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Solution

The fourth proportional to 22,128.00, 30,466.11 and 20,618.97 is: 28,388.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,128.00 : 30,466.11 = 20,618.97 : x
  2. Step 2: Convert to fraction form
    22,128.00/30,466.11 = 20,618.97/x
  3. Step 3: Cross multiply
    22,128.00x = 30,466.11 × 20,618.97
  4. Step 4: Simplify right side
    22,128.00x = 628,179,654.55
  5. Step 5: Solve for x
    x = 628,179,654.55/22,128.00
  6. Step 6: Final answer
    x = 28,388.45

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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.