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Finding the Fourth Proportional to 15,796.17, 21,798.38 and 8,722.44

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Solution

The fourth proportional to 15,796.17, 21,798.38 and 8,722.44 is: 12,036.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,796.17 : 21,798.38 = 8,722.44 : x
  2. Step 2: Convert to fraction form
    15,796.17/21,798.38 = 8,722.44/x
  3. Step 3: Cross multiply
    15,796.17x = 21,798.38 × 8,722.44
  4. Step 4: Simplify right side
    15,796.17x = 190,135,083.45
  5. Step 5: Solve for x
    x = 190,135,083.45/15,796.17
  6. Step 6: Final answer
    x = 12,036.78

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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.