Home / 13,828.38-18,930.49-13,729.56

Finding the Fourth Proportional to 13,828.38, 18,930.49 and 13,729.56

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Solution

The fourth proportional to 13,828.38, 18,930.49 and 13,729.56 is: 18,795.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,828.38 : 18,930.49 = 13,729.56 : x
  2. Step 2: Convert to fraction form
    13,828.38/18,930.49 = 13,729.56/x
  3. Step 3: Cross multiply
    13,828.38x = 18,930.49 × 13,729.56
  4. Step 4: Simplify right side
    13,828.38x = 259,907,298.28
  5. Step 5: Solve for x
    x = 259,907,298.28/13,828.38
  6. Step 6: Final answer
    x = 18,795.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.