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Finding the Fourth Proportional to 15,796.44, 21,799.08 and 8,722.80

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Solution

The fourth proportional to 15,796.44, 21,799.08 and 8,722.80 is: 12,037.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,796.44 : 21,799.08 = 8,722.80 : x
  2. Step 2: Convert to fraction form
    15,796.44/21,799.08 = 8,722.80/x
  3. Step 3: Cross multiply
    15,796.44x = 21,799.08 × 8,722.80
  4. Step 4: Simplify right side
    15,796.44x = 190,149,015.02
  5. Step 5: Solve for x
    x = 190,149,015.02/15,796.44
  6. Step 6: Final answer
    x = 12,037.46

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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.