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Finding the Fourth Proportional to 18,314, 25,273.64 and 9,930.64

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Solution

The fourth proportional to 18,314, 25,273.64 and 9,930.64 is: 13,704.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,314 : 25,273.64 = 9,930.64 : x
  2. Step 2: Convert to fraction form
    18,314/25,273.64 = 9,930.64/x
  3. Step 3: Cross multiply
    18,314x = 25,273.64 × 9,930.64
  4. Step 4: Simplify right side
    18,314x = 250,983,420.33
  5. Step 5: Solve for x
    x = 250,983,420.33/18,314
  6. Step 6: Final answer
    x = 13,704.46

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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.