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Finding the Fourth Proportional to 11,721, 16,175.04 and 8,739.48

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Solution

The fourth proportional to 11,721, 16,175.04 and 8,739.48 is: 12,060.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,721 : 16,175.04 = 8,739.48 : x
  2. Step 2: Convert to fraction form
    11,721/16,175.04 = 8,739.48/x
  3. Step 3: Cross multiply
    11,721x = 16,175.04 × 8,739.48
  4. Step 4: Simplify right side
    11,721x = 141,361,438.58
  5. Step 5: Solve for x
    x = 141,361,438.58/11,721
  6. Step 6: Final answer
    x = 12,060.53

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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.