Home / 13,216.40-19,819.80-4,451.60

Finding the Fourth Proportional to 13,216.40, 19,819.80 and 4,451.60

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Solution

The fourth proportional to 13,216.40, 19,819.80 and 4,451.60 is: 6,675.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,216.40 : 19,819.80 = 4,451.60 : x
  2. Step 2: Convert to fraction form
    13,216.40/19,819.80 = 4,451.60/x
  3. Step 3: Cross multiply
    13,216.40x = 19,819.80 × 4,451.60
  4. Step 4: Simplify right side
    13,216.40x = 88,229,821.68
  5. Step 5: Solve for x
    x = 88,229,821.68/13,216.40
  6. Step 6: Final answer
    x = 6,675.78

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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.