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Finding the Fourth Proportional to 20,195.58, 30,291.20 and 7,048.20

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Solution

The fourth proportional to 20,195.58, 30,291.20 and 7,048.20 is: 10,571.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,195.58 : 30,291.20 = 7,048.20 : x
  2. Step 2: Convert to fraction form
    20,195.58/30,291.20 = 7,048.20/x
  3. Step 3: Cross multiply
    20,195.58x = 30,291.20 × 7,048.20
  4. Step 4: Simplify right side
    20,195.58x = 213,498,400.60
  5. Step 5: Solve for x
    x = 213,498,400.60/20,195.58
  6. Step 6: Final answer
    x = 10,571.54

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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.