Home / 21,723.25-29,976.62-12,161.52

Finding the Fourth Proportional to 21,723.25, 29,976.62 and 12,161.52

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Solution

The fourth proportional to 21,723.25, 29,976.62 and 12,161.52 is: 16,782.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,723.25 : 29,976.62 = 12,161.52 : x
  2. Step 2: Convert to fraction form
    21,723.25/29,976.62 = 12,161.52/x
  3. Step 3: Cross multiply
    21,723.25x = 29,976.62 × 12,161.52
  4. Step 4: Simplify right side
    21,723.25x = 364,561,271.26
  5. Step 5: Solve for x
    x = 364,561,271.26/21,723.25
  6. Step 6: Final answer
    x = 16,782.08

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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.