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Finding the Fourth Proportional to 19,796.91, 29,695.40 and 8,118.33

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Solution

The fourth proportional to 19,796.91, 29,695.40 and 8,118.33 is: 12,177.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,796.91 : 29,695.40 = 8,118.33 : x
  2. Step 2: Convert to fraction form
    19,796.91/29,695.40 = 8,118.33/x
  3. Step 3: Cross multiply
    19,796.91x = 29,695.40 × 8,118.33
  4. Step 4: Simplify right side
    19,796.91x = 241,077,016.09
  5. Step 5: Solve for x
    x = 241,077,016.09/19,796.91
  6. Step 6: Final answer
    x = 12,177.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.