Home / 13,718.76-18,914.68-11,198.31

Finding the Fourth Proportional to 13,718.76, 18,914.68 and 11,198.31

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Solution

The fourth proportional to 13,718.76, 18,914.68 and 11,198.31 is: 15,439.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,718.76 : 18,914.68 = 11,198.31 : x
  2. Step 2: Convert to fraction form
    13,718.76/18,914.68 = 11,198.31/x
  3. Step 3: Cross multiply
    13,718.76x = 18,914.68 × 11,198.31
  4. Step 4: Simplify right side
    13,718.76x = 211,812,450.19
  5. Step 5: Solve for x
    x = 211,812,450.19/13,718.76
  6. Step 6: Final answer
    x = 15,439.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.