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Finding the Fourth Proportional to 17,370, 23,990.40 and 11,771.28

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Solution

The fourth proportional to 17,370, 23,990.40 and 11,771.28 is: 16,257.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,370 : 23,990.40 = 11,771.28 : x
  2. Step 2: Convert to fraction form
    17,370/23,990.40 = 11,771.28/x
  3. Step 3: Cross multiply
    17,370x = 23,990.40 × 11,771.28
  4. Step 4: Simplify right side
    17,370x = 282,397,715.71
  5. Step 5: Solve for x
    x = 282,397,715.71/17,370
  6. Step 6: Final answer
    x = 16,257.78

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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.