Home / 13,918.91-20,882.00-5,156.33

Finding the Fourth Proportional to 13,918.91, 20,882.00 and 5,156.33

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Solution

The fourth proportional to 13,918.91, 20,882.00 and 5,156.33 is: 7,735.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,918.91 : 20,882.00 = 5,156.33 : x
  2. Step 2: Convert to fraction form
    13,918.91/20,882.00 = 5,156.33/x
  3. Step 3: Cross multiply
    13,918.91x = 20,882.00 × 5,156.33
  4. Step 4: Simplify right side
    13,918.91x = 107,674,391.54
  5. Step 5: Solve for x
    x = 107,674,391.54/13,918.91
  6. Step 6: Final answer
    x = 7,735.84

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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.