Home / 21,291.43-29,383.08-11,859.99

Finding the Fourth Proportional to 21,291.43, 29,383.08 and 11,859.99

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Solution

The fourth proportional to 21,291.43, 29,383.08 and 11,859.99 is: 16,367.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,291.43 : 29,383.08 = 11,859.99 : x
  2. Step 2: Convert to fraction form
    21,291.43/29,383.08 = 11,859.99/x
  3. Step 3: Cross multiply
    21,291.43x = 29,383.08 × 11,859.99
  4. Step 4: Simplify right side
    21,291.43x = 348,483,034.97
  5. Step 5: Solve for x
    x = 348,483,034.97/21,291.43
  6. Step 6: Final answer
    x = 16,367.29

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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.