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Finding the Fourth Proportional to 18,663.36, 25,755.44 and 10,279.86

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Solution

The fourth proportional to 18,663.36, 25,755.44 and 10,279.86 is: 14,186.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,663.36 : 25,755.44 = 10,279.86 : x
  2. Step 2: Convert to fraction form
    18,663.36/25,755.44 = 10,279.86/x
  3. Step 3: Cross multiply
    18,663.36x = 25,755.44 × 10,279.86
  4. Step 4: Simplify right side
    18,663.36x = 264,762,266.04
  5. Step 5: Solve for x
    x = 264,762,266.04/18,663.36
  6. Step 6: Final answer
    x = 14,186.21

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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.