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Finding the Fourth Proportional to 13,998.69, 20,998.44 and 3,610.44

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Solution

The fourth proportional to 13,998.69, 20,998.44 and 3,610.44 is: 5,415.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,998.69 : 20,998.44 = 3,610.44 : x
  2. Step 2: Convert to fraction form
    13,998.69/20,998.44 = 3,610.44/x
  3. Step 3: Cross multiply
    13,998.69x = 20,998.44 × 3,610.44
  4. Step 4: Simplify right side
    13,998.69x = 75,813,607.71
  5. Step 5: Solve for x
    x = 75,813,607.71/13,998.69
  6. Step 6: Final answer
    x = 5,415.76

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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.