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Finding the Fourth Proportional to 17,719.70, 26,583.36 and 8,839.80

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Solution

The fourth proportional to 17,719.70, 26,583.36 and 8,839.80 is: 13,261.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,719.70 : 26,583.36 = 8,839.80 : x
  2. Step 2: Convert to fraction form
    17,719.70/26,583.36 = 8,839.80/x
  3. Step 3: Cross multiply
    17,719.70x = 26,583.36 × 8,839.80
  4. Step 4: Simplify right side
    17,719.70x = 234,991,552.58
  5. Step 5: Solve for x
    x = 234,991,552.58/17,719.70
  6. Step 6: Final answer
    x = 13,261.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.