Home / 18,791.36-28,187.04-11,775.68

Finding the Fourth Proportional to 18,791.36, 28,187.04 and 11,775.68

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Solution

The fourth proportional to 18,791.36, 28,187.04 and 11,775.68 is: 17,663.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,791.36 : 28,187.04 = 11,775.68 : x
  2. Step 2: Convert to fraction form
    18,791.36/28,187.04 = 11,775.68/x
  3. Step 3: Cross multiply
    18,791.36x = 28,187.04 × 11,775.68
  4. Step 4: Simplify right side
    18,791.36x = 331,921,563.19
  5. Step 5: Solve for x
    x = 331,921,563.19/18,791.36
  6. Step 6: Final answer
    x = 17,663.52

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Similar ratio
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1.5x scale

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.