Home / 39,906.63-55,069.46-21,756.96

Finding the Fourth Proportional to 39,906.63, 55,069.46 and 21,756.96

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Solution

The fourth proportional to 39,906.63, 55,069.46 and 21,756.96 is: 30,023.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,906.63 : 55,069.46 = 21,756.96 : x
  2. Step 2: Convert to fraction form
    39,906.63/55,069.46 = 21,756.96/x
  3. Step 3: Cross multiply
    39,906.63x = 55,069.46 × 21,756.96
  4. Step 4: Simplify right side
    39,906.63x = 1,198,143,929.66
  5. Step 5: Solve for x
    x = 1,198,143,929.66/39,906.63
  6. Step 6: Final answer
    x = 30,023.68

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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.