Home / 20,640.44-28,481.31-11,566.28

Finding the Fourth Proportional to 20,640.44, 28,481.31 and 11,566.28

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Solution

The fourth proportional to 20,640.44, 28,481.31 and 11,566.28 is: 15,960.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,640.44 : 28,481.31 = 11,566.28 : x
  2. Step 2: Convert to fraction form
    20,640.44/28,481.31 = 11,566.28/x
  3. Step 3: Cross multiply
    20,640.44x = 28,481.31 × 11,566.28
  4. Step 4: Simplify right side
    20,640.44x = 329,422,663.82
  5. Step 5: Solve for x
    x = 329,422,663.82/20,640.44
  6. Step 6: Final answer
    x = 15,960.06

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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.