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Finding the Fourth Proportional to 13,813.26, 20,621.42 and 13,327.26

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Solution

The fourth proportional to 13,813.26, 20,621.42 and 13,327.26 is: 19,895.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,813.26 : 20,621.42 = 13,327.26 : x
  2. Step 2: Convert to fraction form
    13,813.26/20,621.42 = 13,327.26/x
  3. Step 3: Cross multiply
    13,813.26x = 20,621.42 × 13,327.26
  4. Step 4: Simplify right side
    13,813.26x = 274,826,959.27
  5. Step 5: Solve for x
    x = 274,826,959.27/13,813.26
  6. Step 6: Final answer
    x = 19,895.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.