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Finding the Fourth Proportional to 21,696.72, 29,906.76 and 17,710.98

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Solution

The fourth proportional to 21,696.72, 29,906.76 and 17,710.98 is: 24,412.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,696.72 : 29,906.76 = 17,710.98 : x
  2. Step 2: Convert to fraction form
    21,696.72/29,906.76 = 17,710.98/x
  3. Step 3: Cross multiply
    21,696.72x = 29,906.76 × 17,710.98
  4. Step 4: Simplify right side
    21,696.72x = 529,678,028.22
  5. Step 5: Solve for x
    x = 529,678,028.22/21,696.72
  6. Step 6: Final answer
    x = 24,412.82

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.