Home / 21,722.45-29,976.96-11,786.45

Finding the Fourth Proportional to 21,722.45, 29,976.96 and 11,786.45

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Solution

The fourth proportional to 21,722.45, 29,976.96 and 11,786.45 is: 16,265.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,722.45 : 29,976.96 = 11,786.45 : x
  2. Step 2: Convert to fraction form
    21,722.45/29,976.96 = 11,786.45/x
  3. Step 3: Cross multiply
    21,722.45x = 29,976.96 × 11,786.45
  4. Step 4: Simplify right side
    21,722.45x = 353,321,790.31
  5. Step 5: Solve for x
    x = 353,321,790.31/21,722.45
  6. Step 6: Final answer
    x = 16,265.29

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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.