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Finding the Fourth Proportional to 20,512.99, 30,769.62 and 7,365.48

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Solution

The fourth proportional to 20,512.99, 30,769.62 and 7,365.48 is: 11,048.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,512.99 : 30,769.62 = 7,365.48 : x
  2. Step 2: Convert to fraction form
    20,512.99/30,769.62 = 7,365.48/x
  3. Step 3: Cross multiply
    20,512.99x = 30,769.62 × 7,365.48
  4. Step 4: Simplify right side
    20,512.99x = 226,633,020.72
  5. Step 5: Solve for x
    x = 226,633,020.72/20,512.99
  6. Step 6: Final answer
    x = 11,048.27

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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.