Home / 21,003.48-28,984.64-11,443.33

Finding the Fourth Proportional to 21,003.48, 28,984.64 and 11,443.33

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Solution

The fourth proportional to 21,003.48, 28,984.64 and 11,443.33 is: 15,791.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,003.48 : 28,984.64 = 11,443.33 : x
  2. Step 2: Convert to fraction form
    21,003.48/28,984.64 = 11,443.33/x
  3. Step 3: Cross multiply
    21,003.48x = 28,984.64 × 11,443.33
  4. Step 4: Simplify right side
    21,003.48x = 331,680,877.08
  5. Step 5: Solve for x
    x = 331,680,877.08/21,003.48
  6. Step 6: Final answer
    x = 15,791.71

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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.