Home / 20,997.99-28,977.22-11,566.55

Finding the Fourth Proportional to 20,997.99, 28,977.22 and 11,566.55

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Solution

The fourth proportional to 20,997.99, 28,977.22 and 11,566.55 is: 15,961.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,997.99 : 28,977.22 = 11,566.55 : x
  2. Step 2: Convert to fraction form
    20,997.99/28,977.22 = 11,566.55/x
  3. Step 3: Cross multiply
    20,997.99x = 28,977.22 × 11,566.55
  4. Step 4: Simplify right side
    20,997.99x = 335,166,391.55
  5. Step 5: Solve for x
    x = 335,166,391.55/20,997.99
  6. Step 6: Final answer
    x = 15,961.84

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.