Home / 20,865.24-28,796.45-11,914.02

Finding the Fourth Proportional to 20,865.24, 28,796.45 and 11,914.02

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Solution

The fourth proportional to 20,865.24, 28,796.45 and 11,914.02 is: 16,442.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,865.24 : 28,796.45 = 11,914.02 : x
  2. Step 2: Convert to fraction form
    20,865.24/28,796.45 = 11,914.02/x
  3. Step 3: Cross multiply
    20,865.24x = 28,796.45 × 11,914.02
  4. Step 4: Simplify right side
    20,865.24x = 343,081,421.66
  5. Step 5: Solve for x
    x = 343,081,421.66/20,865.24
  6. Step 6: Final answer
    x = 16,442.73

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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.