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Finding the Fourth Proportional to 13,718.56, 20,519.04 and 12,722.56

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Solution

The fourth proportional to 13,718.56, 20,519.04 and 12,722.56 is: 19,029.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,718.56 : 20,519.04 = 12,722.56 : x
  2. Step 2: Convert to fraction form
    13,718.56/20,519.04 = 12,722.56/x
  3. Step 3: Cross multiply
    13,718.56x = 20,519.04 × 12,722.56
  4. Step 4: Simplify right side
    13,718.56x = 261,054,717.54
  5. Step 5: Solve for x
    x = 261,054,717.54/13,718.56
  6. Step 6: Final answer
    x = 19,029.31

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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.