Home / 20,055.70-27,686.21-11,992.96

Finding the Fourth Proportional to 20,055.70, 27,686.21 and 11,992.96

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Solution

The fourth proportional to 20,055.70, 27,686.21 and 11,992.96 is: 16,555.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,055.70 : 27,686.21 = 11,992.96 : x
  2. Step 2: Convert to fraction form
    20,055.70/27,686.21 = 11,992.96/x
  3. Step 3: Cross multiply
    20,055.70x = 27,686.21 × 11,992.96
  4. Step 4: Simplify right side
    20,055.70x = 332,039,583.72
  5. Step 5: Solve for x
    x = 332,039,583.72/20,055.70
  6. Step 6: Final answer
    x = 16,555.87

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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.