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Finding the Fourth Proportional to 19,773.51, 27,286.62 and 11,820.12

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Solution

The fourth proportional to 19,773.51, 27,286.62 and 11,820.12 is: 16,311.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,773.51 : 27,286.62 = 11,820.12 : x
  2. Step 2: Convert to fraction form
    19,773.51/27,286.62 = 11,820.12/x
  3. Step 3: Cross multiply
    19,773.51x = 27,286.62 × 11,820.12
  4. Step 4: Simplify right side
    19,773.51x = 322,531,122.79
  5. Step 5: Solve for x
    x = 322,531,122.79/19,773.51
  6. Step 6: Final answer
    x = 16,311.27

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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.