Home / 39,940.60-55,120.38-22,039.60

Finding the Fourth Proportional to 39,940.60, 55,120.38 and 22,039.60

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Solution

The fourth proportional to 39,940.60, 55,120.38 and 22,039.60 is: 30,415.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,940.60 : 55,120.38 = 22,039.60 : x
  2. Step 2: Convert to fraction form
    39,940.60/55,120.38 = 22,039.60/x
  3. Step 3: Cross multiply
    39,940.60x = 55,120.38 × 22,039.60
  4. Step 4: Simplify right side
    39,940.60x = 1,214,831,127.05
  5. Step 5: Solve for x
    x = 1,214,831,127.05/39,940.60
  6. Step 6: Final answer
    x = 30,415.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.