Home / 20,533.97-28,336.82-11,102.54

Finding the Fourth Proportional to 20,533.97, 28,336.82 and 11,102.54

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Solution

The fourth proportional to 20,533.97, 28,336.82 and 11,102.54 is: 15,321.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,533.97 : 28,336.82 = 11,102.54 : x
  2. Step 2: Convert to fraction form
    20,533.97/28,336.82 = 11,102.54/x
  3. Step 3: Cross multiply
    20,533.97x = 28,336.82 × 11,102.54
  4. Step 4: Simplify right side
    20,533.97x = 314,610,563.60
  5. Step 5: Solve for x
    x = 314,610,563.60/20,533.97
  6. Step 6: Final answer
    x = 15,321.47

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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.