Home / 20,786.66-28,682.30-11,834.34

Finding the Fourth Proportional to 20,786.66, 28,682.30 and 11,834.34

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Solution

The fourth proportional to 20,786.66, 28,682.30 and 11,834.34 is: 16,329.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,786.66 : 28,682.30 = 11,834.34 : x
  2. Step 2: Convert to fraction form
    20,786.66/28,682.30 = 11,834.34/x
  3. Step 3: Cross multiply
    20,786.66x = 28,682.30 × 11,834.34
  4. Step 4: Simplify right side
    20,786.66x = 339,436,058.32
  5. Step 5: Solve for x
    x = 339,436,058.32/20,786.66
  6. Step 6: Final answer
    x = 16,329.51

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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.