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Finding the Fourth Proportional to 11,674.52, 17,518.44 and 4,278

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Solution

The fourth proportional to 11,674.52, 17,518.44 and 4,278 is: 6,419.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,674.52 : 17,518.44 = 4,278 : x
  2. Step 2: Convert to fraction form
    11,674.52/17,518.44 = 4,278/x
  3. Step 3: Cross multiply
    11,674.52x = 17,518.44 × 4,278
  4. Step 4: Simplify right side
    11,674.52x = 74,943,886.32
  5. Step 5: Solve for x
    x = 74,943,886.32/11,674.52
  6. Step 6: Final answer
    x = 6,419.44

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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.