Home / 21,919.72-32,887.77-11,383.15

Finding the Fourth Proportional to 21,919.72, 32,887.77 and 11,383.15

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Solution

The fourth proportional to 21,919.72, 32,887.77 and 11,383.15 is: 17,078.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,919.72 : 32,887.77 = 11,383.15 : x
  2. Step 2: Convert to fraction form
    21,919.72/32,887.77 = 11,383.15/x
  3. Step 3: Cross multiply
    21,919.72x = 32,887.77 × 11,383.15
  4. Step 4: Simplify right side
    21,919.72x = 374,366,419.08
  5. Step 5: Solve for x
    x = 374,366,419.08/21,919.72
  6. Step 6: Final answer
    x = 17,078.98

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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.