Home / 20,833.16-28,749.78-11,880.72

Finding the Fourth Proportional to 20,833.16, 28,749.78 and 11,880.72

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Solution

The fourth proportional to 20,833.16, 28,749.78 and 11,880.72 is: 16,395.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,833.16 : 28,749.78 = 11,880.72 : x
  2. Step 2: Convert to fraction form
    20,833.16/28,749.78 = 11,880.72/x
  3. Step 3: Cross multiply
    20,833.16x = 28,749.78 × 11,880.72
  4. Step 4: Simplify right side
    20,833.16x = 341,568,086.24
  5. Step 5: Solve for x
    x = 341,568,086.24/20,833.16
  6. Step 6: Final answer
    x = 16,395.41

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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.