Home / 20,286.69-27,993.78-11,332.95

Finding the Fourth Proportional to 20,286.69, 27,993.78 and 11,332.95

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Solution

The fourth proportional to 20,286.69, 27,993.78 and 11,332.95 is: 15,638.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,286.69 : 27,993.78 = 11,332.95 : x
  2. Step 2: Convert to fraction form
    20,286.69/27,993.78 = 11,332.95/x
  3. Step 3: Cross multiply
    20,286.69x = 27,993.78 × 11,332.95
  4. Step 4: Simplify right side
    20,286.69x = 317,252,109.05
  5. Step 5: Solve for x
    x = 317,252,109.05/20,286.69
  6. Step 6: Final answer
    x = 15,638.44

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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.