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Finding the Fourth Proportional to 20,005.99, 30,008.22 and 5,013.09

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Solution

The fourth proportional to 20,005.99, 30,008.22 and 5,013.09 is: 7,519.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,005.99 : 30,008.22 = 5,013.09 : x
  2. Step 2: Convert to fraction form
    20,005.99/30,008.22 = 5,013.09/x
  3. Step 3: Cross multiply
    20,005.99x = 30,008.22 × 5,013.09
  4. Step 4: Simplify right side
    20,005.99x = 150,433,907.60
  5. Step 5: Solve for x
    x = 150,433,907.60/20,005.99
  6. Step 6: Final answer
    x = 7,519.44

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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.