Home / 12,705.53-19,057.32-3,940.20

Finding the Fourth Proportional to 12,705.53, 19,057.32 and 3,940.20

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Solution

The fourth proportional to 12,705.53, 19,057.32 and 3,940.20 is: 5,910.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,705.53 : 19,057.32 = 3,940.20 : x
  2. Step 2: Convert to fraction form
    12,705.53/19,057.32 = 3,940.20/x
  3. Step 3: Cross multiply
    12,705.53x = 19,057.32 × 3,940.20
  4. Step 4: Simplify right side
    12,705.53x = 75,089,652.26
  5. Step 5: Solve for x
    x = 75,089,652.26/12,705.53
  6. Step 6: Final answer
    x = 5,910.00

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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.