Home / 13,865.31-20,788.25-5,099.09

Finding the Fourth Proportional to 13,865.31, 20,788.25 and 5,099.09

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Solution

The fourth proportional to 13,865.31, 20,788.25 and 5,099.09 is: 7,645.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,865.31 : 20,788.25 = 5,099.09 : x
  2. Step 2: Convert to fraction form
    13,865.31/20,788.25 = 5,099.09/x
  3. Step 3: Cross multiply
    13,865.31x = 20,788.25 × 5,099.09
  4. Step 4: Simplify right side
    13,865.31x = 106,001,028.26
  5. Step 5: Solve for x
    x = 106,001,028.26/13,865.31
  6. Step 6: Final answer
    x = 7,645.05

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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.