Home / 20,693.06-28,556.31-11,261.62

Finding the Fourth Proportional to 20,693.06, 28,556.31 and 11,261.62

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Solution

The fourth proportional to 20,693.06, 28,556.31 and 11,261.62 is: 15,540.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,693.06 : 28,556.31 = 11,261.62 : x
  2. Step 2: Convert to fraction form
    20,693.06/28,556.31 = 11,261.62/x
  3. Step 3: Cross multiply
    20,693.06x = 28,556.31 × 11,261.62
  4. Step 4: Simplify right side
    20,693.06x = 321,590,311.82
  5. Step 5: Solve for x
    x = 321,590,311.82/20,693.06
  6. Step 6: Final answer
    x = 15,540.97

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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.