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Finding the Fourth Proportional to 12,604.05, 18,900 and 8,448.75

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Solution

The fourth proportional to 12,604.05, 18,900 and 8,448.75 is: 12,669.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,604.05 : 18,900 = 8,448.75 : x
  2. Step 2: Convert to fraction form
    12,604.05/18,900 = 8,448.75/x
  3. Step 3: Cross multiply
    12,604.05x = 18,900 × 8,448.75
  4. Step 4: Simplify right side
    12,604.05x = 159,681,375
  5. Step 5: Solve for x
    x = 159,681,375/12,604.05
  6. Step 6: Final answer
    x = 12,669.05

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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.