Home / 20,137.22-27,788.59-11,185.29

Finding the Fourth Proportional to 20,137.22, 27,788.59 and 11,185.29

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Solution

The fourth proportional to 20,137.22, 27,788.59 and 11,185.29 is: 15,435.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,137.22 : 27,788.59 = 11,185.29 : x
  2. Step 2: Convert to fraction form
    20,137.22/27,788.59 = 11,185.29/x
  3. Step 3: Cross multiply
    20,137.22x = 27,788.59 × 11,185.29
  4. Step 4: Simplify right side
    20,137.22x = 310,823,388.91
  5. Step 5: Solve for x
    x = 310,823,388.91/20,137.22
  6. Step 6: Final answer
    x = 15,435.27

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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.