Home / 20,940.02-28,896.44-11,508.02

Finding the Fourth Proportional to 20,940.02, 28,896.44 and 11,508.02

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Solution

The fourth proportional to 20,940.02, 28,896.44 and 11,508.02 is: 15,880.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,940.02 : 28,896.44 = 11,508.02 : x
  2. Step 2: Convert to fraction form
    20,940.02/28,896.44 = 11,508.02/x
  3. Step 3: Cross multiply
    20,940.02x = 28,896.44 × 11,508.02
  4. Step 4: Simplify right side
    20,940.02x = 332,540,809.45
  5. Step 5: Solve for x
    x = 332,540,809.45/20,940.02
  6. Step 6: Final answer
    x = 15,880.63

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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.