Home / 13,619.73-20,418.30-5,184.50

Finding the Fourth Proportional to 13,619.73, 20,418.30 and 5,184.50

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Solution

The fourth proportional to 13,619.73, 20,418.30 and 5,184.50 is: 7,772.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,619.73 : 20,418.30 = 5,184.50 : x
  2. Step 2: Convert to fraction form
    13,619.73/20,418.30 = 5,184.50/x
  3. Step 3: Cross multiply
    13,619.73x = 20,418.30 × 5,184.50
  4. Step 4: Simplify right side
    13,619.73x = 105,858,574.26
  5. Step 5: Solve for x
    x = 105,858,574.26/13,619.73
  6. Step 6: Final answer
    x = 7,772.44

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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.