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Finding the Fourth Proportional to 12,954, 19,427.78 and 5,557.62

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Solution

The fourth proportional to 12,954, 19,427.78 and 5,557.62 is: 8,335.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,954 : 19,427.78 = 5,557.62 : x
  2. Step 2: Convert to fraction form
    12,954/19,427.78 = 5,557.62/x
  3. Step 3: Cross multiply
    12,954x = 19,427.78 × 5,557.62
  4. Step 4: Simplify right side
    12,954x = 107,972,218.68
  5. Step 5: Solve for x
    x = 107,972,218.68/12,954
  6. Step 6: Final answer
    x = 8,335.05

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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.