Home / 20,271.70-27,974.80-11,197.64

Finding the Fourth Proportional to 20,271.70, 27,974.80 and 11,197.64

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Solution

The fourth proportional to 20,271.70, 27,974.80 and 11,197.64 is: 15,452.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,271.70 : 27,974.80 = 11,197.64 : x
  2. Step 2: Convert to fraction form
    20,271.70/27,974.80 = 11,197.64/x
  3. Step 3: Cross multiply
    20,271.70x = 27,974.80 × 11,197.64
  4. Step 4: Simplify right side
    20,271.70x = 313,251,739.47
  5. Step 5: Solve for x
    x = 313,251,739.47/20,271.70
  6. Step 6: Final answer
    x = 15,452.66

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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.