Home / 21,716.52-29,968.74-11,780.52

Finding the Fourth Proportional to 21,716.52, 29,968.74 and 11,780.52

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Solution

The fourth proportional to 21,716.52, 29,968.74 and 11,780.52 is: 16,257.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,716.52 : 29,968.74 = 11,780.52 : x
  2. Step 2: Convert to fraction form
    21,716.52/29,968.74 = 11,780.52/x
  3. Step 3: Cross multiply
    21,716.52x = 29,968.74 × 11,780.52
  4. Step 4: Simplify right side
    21,716.52x = 353,047,340.94
  5. Step 5: Solve for x
    x = 353,047,340.94/21,716.52
  6. Step 6: Final answer
    x = 16,257.09

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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.