Home / 21,383.69-29,508.91-11,954.07

Finding the Fourth Proportional to 21,383.69, 29,508.91 and 11,954.07

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Solution

The fourth proportional to 21,383.69, 29,508.91 and 11,954.07 is: 16,496.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,383.69 : 29,508.91 = 11,954.07 : x
  2. Step 2: Convert to fraction form
    21,383.69/29,508.91 = 11,954.07/x
  3. Step 3: Cross multiply
    21,383.69x = 29,508.91 × 11,954.07
  4. Step 4: Simplify right side
    21,383.69x = 352,751,545.88
  5. Step 5: Solve for x
    x = 352,751,545.88/21,383.69
  6. Step 6: Final answer
    x = 16,496.29

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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.