Home / 19,725.09-29,540.48-11,379.80

Finding the Fourth Proportional to 19,725.09, 29,540.48 and 11,379.80

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Solution

The fourth proportional to 19,725.09, 29,540.48 and 11,379.80 is: 17,042.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,725.09 : 29,540.48 = 11,379.80 : x
  2. Step 2: Convert to fraction form
    19,725.09/29,540.48 = 11,379.80/x
  3. Step 3: Cross multiply
    19,725.09x = 29,540.48 × 11,379.80
  4. Step 4: Simplify right side
    19,725.09x = 336,164,549.70
  5. Step 5: Solve for x
    x = 336,164,549.70/19,725.09
  6. Step 6: Final answer
    x = 17,042.48

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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.