Home / 13,792.80-20,683.07-3,929.85

Finding the Fourth Proportional to 13,792.80, 20,683.07 and 3,929.85

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Solution

The fourth proportional to 13,792.80, 20,683.07 and 3,929.85 is: 5,893.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,792.80 : 20,683.07 = 3,929.85 : x
  2. Step 2: Convert to fraction form
    13,792.80/20,683.07 = 3,929.85/x
  3. Step 3: Cross multiply
    13,792.80x = 20,683.07 × 3,929.85
  4. Step 4: Simplify right side
    13,792.80x = 81,281,342.99
  5. Step 5: Solve for x
    x = 81,281,342.99/13,792.80
  6. Step 6: Final answer
    x = 5,893.03

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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.