Home / 20,917.44-28,866.06-11,485.98

Finding the Fourth Proportional to 20,917.44, 28,866.06 and 11,485.98

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Solution

The fourth proportional to 20,917.44, 28,866.06 and 11,485.98 is: 15,850.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,917.44 : 28,866.06 = 11,485.98 : x
  2. Step 2: Convert to fraction form
    20,917.44/28,866.06 = 11,485.98/x
  3. Step 3: Cross multiply
    20,917.44x = 28,866.06 × 11,485.98
  4. Step 4: Simplify right side
    20,917.44x = 331,554,987.84
  5. Step 5: Solve for x
    x = 331,554,987.84/20,917.44
  6. Step 6: Final answer
    x = 15,850.65

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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.