Home / 13,984.72-20,980.73-5,220.33

Finding the Fourth Proportional to 13,984.72, 20,980.73 and 5,220.33

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Solution

The fourth proportional to 13,984.72, 20,980.73 and 5,220.33 is: 7,831.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,984.72 : 20,980.73 = 5,220.33 : x
  2. Step 2: Convert to fraction form
    13,984.72/20,980.73 = 5,220.33/x
  3. Step 3: Cross multiply
    13,984.72x = 20,980.73 × 5,220.33
  4. Step 4: Simplify right side
    13,984.72x = 109,526,334.24
  5. Step 5: Solve for x
    x = 109,526,334.24/13,984.72
  6. Step 6: Final answer
    x = 7,831.86

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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.