Home / 13,828.26-19,087.11-13,122.78

Finding the Fourth Proportional to 13,828.26, 19,087.11 and 13,122.78

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Solution

The fourth proportional to 13,828.26, 19,087.11 and 13,122.78 is: 18,113.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,828.26 : 19,087.11 = 13,122.78 : x
  2. Step 2: Convert to fraction form
    13,828.26/19,087.11 = 13,122.78/x
  3. Step 3: Cross multiply
    13,828.26x = 19,087.11 × 13,122.78
  4. Step 4: Simplify right side
    13,828.26x = 250,475,945.37
  5. Step 5: Solve for x
    x = 250,475,945.37/13,828.26
  6. Step 6: Final answer
    x = 18,113.34

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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.