Home / 21,781.94-32,629.16-18,435.84

Finding the Fourth Proportional to 21,781.94, 32,629.16 and 18,435.84

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Solution

The fourth proportional to 21,781.94, 32,629.16 and 18,435.84 is: 27,616.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,781.94 : 32,629.16 = 18,435.84 : x
  2. Step 2: Convert to fraction form
    21,781.94/32,629.16 = 18,435.84/x
  3. Step 3: Cross multiply
    21,781.94x = 32,629.16 × 18,435.84
  4. Step 4: Simplify right side
    21,781.94x = 601,545,973.09
  5. Step 5: Solve for x
    x = 601,545,973.09/21,781.94
  6. Step 6: Final answer
    x = 27,616.73

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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.