Home / 13,982.55-20,973.78-4,121.81

Finding the Fourth Proportional to 13,982.55, 20,973.78 and 4,121.81

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Solution

The fourth proportional to 13,982.55, 20,973.78 and 4,121.81 is: 6,182.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,982.55 : 20,973.78 = 4,121.81 : x
  2. Step 2: Convert to fraction form
    13,982.55/20,973.78 = 4,121.81/x
  3. Step 3: Cross multiply
    13,982.55x = 20,973.78 × 4,121.81
  4. Step 4: Simplify right side
    13,982.55x = 86,449,831.27
  5. Step 5: Solve for x
    x = 86,449,831.27/13,982.55
  6. Step 6: Final answer
    x = 6,182.69

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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.