Home / 21,276.25-31,914.15-5,481.22

Finding the Fourth Proportional to 21,276.25, 31,914.15 and 5,481.22

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Solution

The fourth proportional to 21,276.25, 31,914.15 and 5,481.22 is: 8,221.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,276.25 : 31,914.15 = 5,481.22 : x
  2. Step 2: Convert to fraction form
    21,276.25/31,914.15 = 5,481.22/x
  3. Step 3: Cross multiply
    21,276.25x = 31,914.15 × 5,481.22
  4. Step 4: Simplify right side
    21,276.25x = 174,928,467.59
  5. Step 5: Solve for x
    x = 174,928,467.59/21,276.25
  6. Step 6: Final answer
    x = 8,221.77

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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.