Home / 20,121.21-27,772.31-11,628.26

Finding the Fourth Proportional to 20,121.21, 27,772.31 and 11,628.26

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Solution

The fourth proportional to 20,121.21, 27,772.31 and 11,628.26 is: 16,049.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,121.21 : 27,772.31 = 11,628.26 : x
  2. Step 2: Convert to fraction form
    20,121.21/27,772.31 = 11,628.26/x
  3. Step 3: Cross multiply
    20,121.21x = 27,772.31 × 11,628.26
  4. Step 4: Simplify right side
    20,121.21x = 322,943,444.48
  5. Step 5: Solve for x
    x = 322,943,444.48/20,121.21
  6. Step 6: Final answer
    x = 16,049.90

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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.