Home / 13,828.38-19,083.36-7,540.75

Finding the Fourth Proportional to 13,828.38, 19,083.36 and 7,540.75

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Solution

The fourth proportional to 13,828.38, 19,083.36 and 7,540.75 is: 10,406.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,828.38 : 19,083.36 = 7,540.75 : x
  2. Step 2: Convert to fraction form
    13,828.38/19,083.36 = 7,540.75/x
  3. Step 3: Cross multiply
    13,828.38x = 19,083.36 × 7,540.75
  4. Step 4: Simplify right side
    13,828.38x = 143,902,846.92
  5. Step 5: Solve for x
    x = 143,902,846.92/13,828.38
  6. Step 6: Final answer
    x = 10,406.34

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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.