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Finding the Fourth Proportional to 21,952.87, 30,294.87 and 11,881.33

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Solution

The fourth proportional to 21,952.87, 30,294.87 and 11,881.33 is: 16,396.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,952.87 : 30,294.87 = 11,881.33 : x
  2. Step 2: Convert to fraction form
    21,952.87/30,294.87 = 11,881.33/x
  3. Step 3: Cross multiply
    21,952.87x = 30,294.87 × 11,881.33
  4. Step 4: Simplify right side
    21,952.87x = 359,943,347.78
  5. Step 5: Solve for x
    x = 359,943,347.78/21,952.87
  6. Step 6: Final answer
    x = 16,396.19

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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.