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Finding the Fourth Proportional to 21,843.44, 32,764.89 and 15,405.51

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Solution

The fourth proportional to 21,843.44, 32,764.89 and 15,405.51 is: 23,108.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,843.44 : 32,764.89 = 15,405.51 : x
  2. Step 2: Convert to fraction form
    21,843.44/32,764.89 = 15,405.51/x
  3. Step 3: Cross multiply
    21,843.44x = 32,764.89 × 15,405.51
  4. Step 4: Simplify right side
    21,843.44x = 504,759,840.54
  5. Step 5: Solve for x
    x = 504,759,840.54/21,843.44
  6. Step 6: Final answer
    x = 23,108.07

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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.