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Finding the Fourth Proportional to 13,198.70, 19,798.07 and 5,412.98

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Solution

The fourth proportional to 13,198.70, 19,798.07 and 5,412.98 is: 8,119.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,198.70 : 19,798.07 = 5,412.98 : x
  2. Step 2: Convert to fraction form
    13,198.70/19,798.07 = 5,412.98/x
  3. Step 3: Cross multiply
    13,198.70x = 19,798.07 × 5,412.98
  4. Step 4: Simplify right side
    13,198.70x = 107,166,579.38
  5. Step 5: Solve for x
    x = 107,166,579.38/13,198.70
  6. Step 6: Final answer
    x = 8,119.48

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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.