Home / 20,833.45-28,749.94-11,880.73

Finding the Fourth Proportional to 20,833.45, 28,749.94 and 11,880.73

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Solution

The fourth proportional to 20,833.45, 28,749.94 and 11,880.73 is: 16,395.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,833.45 : 28,749.94 = 11,880.73 : x
  2. Step 2: Convert to fraction form
    20,833.45/28,749.94 = 11,880.73/x
  3. Step 3: Cross multiply
    20,833.45x = 28,749.94 × 11,880.73
  4. Step 4: Simplify right side
    20,833.45x = 341,570,119.17
  5. Step 5: Solve for x
    x = 341,570,119.17/20,833.45
  6. Step 6: Final answer
    x = 16,395.27

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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.