Home / 20,137.58-27,789.72-11,185.14

Finding the Fourth Proportional to 20,137.58, 27,789.72 and 11,185.14

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Solution

The fourth proportional to 20,137.58, 27,789.72 and 11,185.14 is: 15,435.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,137.58 : 27,789.72 = 11,185.14 : x
  2. Step 2: Convert to fraction form
    20,137.58/27,789.72 = 11,185.14/x
  3. Step 3: Cross multiply
    20,137.58x = 27,789.72 × 11,185.14
  4. Step 4: Simplify right side
    20,137.58x = 310,831,908.76
  5. Step 5: Solve for x
    x = 310,831,908.76/20,137.58
  6. Step 6: Final answer
    x = 15,435.42

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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.