Home / 20,185.60-30,351.30-19,748.20

Finding the Fourth Proportional to 20,185.60, 30,351.30 and 19,748.20

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Solution

The fourth proportional to 20,185.60, 30,351.30 and 19,748.20 is: 29,693.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,185.60 : 30,351.30 = 19,748.20 : x
  2. Step 2: Convert to fraction form
    20,185.60/30,351.30 = 19,748.20/x
  3. Step 3: Cross multiply
    20,185.60x = 30,351.30 × 19,748.20
  4. Step 4: Simplify right side
    20,185.60x = 599,383,542.66
  5. Step 5: Solve for x
    x = 599,383,542.66/20,185.60
  6. Step 6: Final answer
    x = 29,693.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.