Home / 13,645.18-20,455.80-11,324.44

Finding the Fourth Proportional to 13,645.18, 20,455.80 and 11,324.44

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Solution

The fourth proportional to 13,645.18, 20,455.80 and 11,324.44 is: 16,976.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,645.18 : 20,455.80 = 11,324.44 : x
  2. Step 2: Convert to fraction form
    13,645.18/20,455.80 = 11,324.44/x
  3. Step 3: Cross multiply
    13,645.18x = 20,455.80 × 11,324.44
  4. Step 4: Simplify right side
    13,645.18x = 231,650,479.75
  5. Step 5: Solve for x
    x = 231,650,479.75/13,645.18
  6. Step 6: Final answer
    x = 16,976.73

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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.