Home / 20,786.34-28,684.06-11,833.81

Finding the Fourth Proportional to 20,786.34, 28,684.06 and 11,833.81

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Solution

The fourth proportional to 20,786.34, 28,684.06 and 11,833.81 is: 16,330.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,786.34 : 28,684.06 = 11,833.81 : x
  2. Step 2: Convert to fraction form
    20,786.34/28,684.06 = 11,833.81/x
  3. Step 3: Cross multiply
    20,786.34x = 28,684.06 × 11,833.81
  4. Step 4: Simplify right side
    20,786.34x = 339,441,716.07
  5. Step 5: Solve for x
    x = 339,441,716.07/20,786.34
  6. Step 6: Final answer
    x = 16,330.04

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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.