Home / 21,366.84-29,489.20-11,936

Finding the Fourth Proportional to 21,366.84, 29,489.20 and 11,936

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Solution

The fourth proportional to 21,366.84, 29,489.20 and 11,936 is: 16,473.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,366.84 : 29,489.20 = 11,936 : x
  2. Step 2: Convert to fraction form
    21,366.84/29,489.20 = 11,936/x
  3. Step 3: Cross multiply
    21,366.84x = 29,489.20 × 11,936
  4. Step 4: Simplify right side
    21,366.84x = 351,983,091.20
  5. Step 5: Solve for x
    x = 351,983,091.20/21,366.84
  6. Step 6: Final answer
    x = 16,473.33

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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.