Home / 21,178.82-29,226.03-11,748.26

Finding the Fourth Proportional to 21,178.82, 29,226.03 and 11,748.26

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Solution

The fourth proportional to 21,178.82, 29,226.03 and 11,748.26 is: 16,212.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,178.82 : 29,226.03 = 11,748.26 : x
  2. Step 2: Convert to fraction form
    21,178.82/29,226.03 = 11,748.26/x
  3. Step 3: Cross multiply
    21,178.82x = 29,226.03 × 11,748.26
  4. Step 4: Simplify right side
    21,178.82x = 343,354,940.47
  5. Step 5: Solve for x
    x = 343,354,940.47/21,178.82
  6. Step 6: Final answer
    x = 16,212.18

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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.