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Finding the Fourth Proportional to 13,641.92, 20,453.77 and 11,012.66

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Solution

The fourth proportional to 13,641.92, 20,453.77 and 11,012.66 is: 16,511.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,641.92 : 20,453.77 = 11,012.66 : x
  2. Step 2: Convert to fraction form
    13,641.92/20,453.77 = 11,012.66/x
  3. Step 3: Cross multiply
    13,641.92x = 20,453.77 × 11,012.66
  4. Step 4: Simplify right side
    13,641.92x = 225,250,340.98
  5. Step 5: Solve for x
    x = 225,250,340.98/13,641.92
  6. Step 6: Final answer
    x = 16,511.63

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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.