Home / 20,181.31-30,270.43-8,940.13

Finding the Fourth Proportional to 20,181.31, 30,270.43 and 8,940.13

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Solution

The fourth proportional to 20,181.31, 30,270.43 and 8,940.13 is: 13,409.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,181.31 : 30,270.43 = 8,940.13 : x
  2. Step 2: Convert to fraction form
    20,181.31/30,270.43 = 8,940.13/x
  3. Step 3: Cross multiply
    20,181.31x = 30,270.43 × 8,940.13
  4. Step 4: Simplify right side
    20,181.31x = 270,621,579.36
  5. Step 5: Solve for x
    x = 270,621,579.36/20,181.31
  6. Step 6: Final answer
    x = 13,409.52

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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.