Home / 20,802.85-28,704.58-11,850.53

Finding the Fourth Proportional to 20,802.85, 28,704.58 and 11,850.53

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Solution

The fourth proportional to 20,802.85, 28,704.58 and 11,850.53 is: 16,351.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,802.85 : 28,704.58 = 11,850.53 : x
  2. Step 2: Convert to fraction form
    20,802.85/28,704.58 = 11,850.53/x
  3. Step 3: Cross multiply
    20,802.85x = 28,704.58 × 11,850.53
  4. Step 4: Simplify right side
    20,802.85x = 340,164,313.28
  5. Step 5: Solve for x
    x = 340,164,313.28/20,802.85
  6. Step 6: Final answer
    x = 16,351.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.