Home / 13,930.72-20,871.77-11,605.66

Finding the Fourth Proportional to 13,930.72, 20,871.77 and 11,605.66

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Solution

The fourth proportional to 13,930.72, 20,871.77 and 11,605.66 is: 17,388.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,930.72 : 20,871.77 = 11,605.66 : x
  2. Step 2: Convert to fraction form
    13,930.72/20,871.77 = 11,605.66/x
  3. Step 3: Cross multiply
    13,930.72x = 20,871.77 × 11,605.66
  4. Step 4: Simplify right side
    13,930.72x = 242,230,556.01
  5. Step 5: Solve for x
    x = 242,230,556.01/13,930.72
  6. Step 6: Final answer
    x = 17,388.23

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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.