Home / 20,238.87-27,929.79-11,286.95

Finding the Fourth Proportional to 20,238.87, 27,929.79 and 11,286.95

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Solution

The fourth proportional to 20,238.87, 27,929.79 and 11,286.95 is: 15,576.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,238.87 : 27,929.79 = 11,286.95 : x
  2. Step 2: Convert to fraction form
    20,238.87/27,929.79 = 11,286.95/x
  3. Step 3: Cross multiply
    20,238.87x = 27,929.79 × 11,286.95
  4. Step 4: Simplify right side
    20,238.87x = 315,242,213.06
  5. Step 5: Solve for x
    x = 315,242,213.06/20,238.87
  6. Step 6: Final answer
    x = 15,576.08

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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.