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Finding the Fourth Proportional to 19,012.75, 28,519.41 and 5,865.10

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Solution

The fourth proportional to 19,012.75, 28,519.41 and 5,865.10 is: 8,797.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,012.75 : 28,519.41 = 5,865.10 : x
  2. Step 2: Convert to fraction form
    19,012.75/28,519.41 = 5,865.10/x
  3. Step 3: Cross multiply
    19,012.75x = 28,519.41 × 5,865.10
  4. Step 4: Simplify right side
    19,012.75x = 167,269,048.99
  5. Step 5: Solve for x
    x = 167,269,048.99/19,012.75
  6. Step 6: Final answer
    x = 8,797.73

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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.