Home / 20,729.23-28,610.95-13,174.09

Finding the Fourth Proportional to 20,729.23, 28,610.95 and 13,174.09

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Solution

The fourth proportional to 20,729.23, 28,610.95 and 13,174.09 is: 18,183.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,729.23 : 28,610.95 = 13,174.09 : x
  2. Step 2: Convert to fraction form
    20,729.23/28,610.95 = 13,174.09/x
  3. Step 3: Cross multiply
    20,729.23x = 28,610.95 × 13,174.09
  4. Step 4: Simplify right side
    20,729.23x = 376,923,087.23
  5. Step 5: Solve for x
    x = 376,923,087.23/20,729.23
  6. Step 6: Final answer
    x = 18,183.17

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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.