Home / 20,786.09-28,683.72-11,833.56

Finding the Fourth Proportional to 20,786.09, 28,683.72 and 11,833.56

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Solution

The fourth proportional to 20,786.09, 28,683.72 and 11,833.56 is: 16,329.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,786.09 : 28,683.72 = 11,833.56 : x
  2. Step 2: Convert to fraction form
    20,786.09/28,683.72 = 11,833.56/x
  3. Step 3: Cross multiply
    20,786.09x = 28,683.72 × 11,833.56
  4. Step 4: Simplify right side
    20,786.09x = 339,430,521.64
  5. Step 5: Solve for x
    x = 339,430,521.64/20,786.09
  6. Step 6: Final answer
    x = 16,329.70

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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.