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Finding the Fourth Proportional to 15,196.01, 20,969.79 and 8,481.31

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Solution

The fourth proportional to 15,196.01, 20,969.79 and 8,481.31 is: 11,703.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,196.01 : 20,969.79 = 8,481.31 : x
  2. Step 2: Convert to fraction form
    15,196.01/20,969.79 = 8,481.31/x
  3. Step 3: Cross multiply
    15,196.01x = 20,969.79 × 8,481.31
  4. Step 4: Simplify right side
    15,196.01x = 177,851,205.40
  5. Step 5: Solve for x
    x = 177,851,205.40/15,196.01
  6. Step 6: Final answer
    x = 11,703.81

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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.