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Finding the Fourth Proportional to 17,381.72, 23,969.49 and 13,085.10

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Solution

The fourth proportional to 17,381.72, 23,969.49 and 13,085.10 is: 18,044.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,381.72 : 23,969.49 = 13,085.10 : x
  2. Step 2: Convert to fraction form
    17,381.72/23,969.49 = 13,085.10/x
  3. Step 3: Cross multiply
    17,381.72x = 23,969.49 × 13,085.10
  4. Step 4: Simplify right side
    17,381.72x = 313,643,173.60
  5. Step 5: Solve for x
    x = 313,643,173.60/17,381.72
  6. Step 6: Final answer
    x = 18,044.43

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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.