Home / 15,003.90-20,705.81-8,198.37

Finding the Fourth Proportional to 15,003.90, 20,705.81 and 8,198.37

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Solution

The fourth proportional to 15,003.90, 20,705.81 and 8,198.37 is: 11,313.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,003.90 : 20,705.81 = 8,198.37 : x
  2. Step 2: Convert to fraction form
    15,003.90/20,705.81 = 8,198.37/x
  3. Step 3: Cross multiply
    15,003.90x = 20,705.81 × 8,198.37
  4. Step 4: Simplify right side
    15,003.90x = 169,753,850.54
  5. Step 5: Solve for x
    x = 169,753,850.54/15,003.90
  6. Step 6: Final answer
    x = 11,313.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.