Home / 19,971.22-27,540.60-15,493.34

Finding the Fourth Proportional to 19,971.22, 27,540.60 and 15,493.34

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Solution

The fourth proportional to 19,971.22, 27,540.60 and 15,493.34 is: 21,365.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,971.22 : 27,540.60 = 15,493.34 : x
  2. Step 2: Convert to fraction form
    19,971.22/27,540.60 = 15,493.34/x
  3. Step 3: Cross multiply
    19,971.22x = 27,540.60 × 15,493.34
  4. Step 4: Simplify right side
    19,971.22x = 426,695,879.60
  5. Step 5: Solve for x
    x = 426,695,879.60/19,971.22
  6. Step 6: Final answer
    x = 21,365.54

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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.