Home / 19,481.87-29,220.14-5,440.72

Finding the Fourth Proportional to 19,481.87, 29,220.14 and 5,440.72

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Solution

The fourth proportional to 19,481.87, 29,220.14 and 5,440.72 is: 8,160.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,481.87 : 29,220.14 = 5,440.72 : x
  2. Step 2: Convert to fraction form
    19,481.87/29,220.14 = 5,440.72/x
  3. Step 3: Cross multiply
    19,481.87x = 29,220.14 × 5,440.72
  4. Step 4: Simplify right side
    19,481.87x = 158,978,595.44
  5. Step 5: Solve for x
    x = 158,978,595.44/19,481.87
  6. Step 6: Final answer
    x = 8,160.34

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1.5x scale

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.