Home / 11,619.60-17,418.84-4,689.36

Finding the Fourth Proportional to 11,619.60, 17,418.84 and 4,689.36

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Solution

The fourth proportional to 11,619.60, 17,418.84 and 4,689.36 is: 7,029.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,619.60 : 17,418.84 = 4,689.36 : x
  2. Step 2: Convert to fraction form
    11,619.60/17,418.84 = 4,689.36/x
  3. Step 3: Cross multiply
    11,619.60x = 17,418.84 × 4,689.36
  4. Step 4: Simplify right side
    11,619.60x = 81,683,211.54
  5. Step 5: Solve for x
    x = 81,683,211.54/11,619.60
  6. Step 6: Final answer
    x = 7,029.78

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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.