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Finding the Fourth Proportional to 18,698.92, 28,049.60 and 7,012.44

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Solution

The fourth proportional to 18,698.92, 28,049.60 and 7,012.44 is: 10,519.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,698.92 : 28,049.60 = 7,012.44 : x
  2. Step 2: Convert to fraction form
    18,698.92/28,049.60 = 7,012.44/x
  3. Step 3: Cross multiply
    18,698.92x = 28,049.60 × 7,012.44
  4. Step 4: Simplify right side
    18,698.92x = 196,696,154.56
  5. Step 5: Solve for x
    x = 196,696,154.56/18,698.92
  6. Step 6: Final answer
    x = 10,519.12

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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.