Home / 39,662.39-54,734.20-21,757.55

Finding the Fourth Proportional to 39,662.39, 54,734.20 and 21,757.55

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Solution

The fourth proportional to 39,662.39, 54,734.20 and 21,757.55 is: 30,025.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,662.39 : 54,734.20 = 21,757.55 : x
  2. Step 2: Convert to fraction form
    39,662.39/54,734.20 = 21,757.55/x
  3. Step 3: Cross multiply
    39,662.39x = 54,734.20 × 21,757.55
  4. Step 4: Simplify right side
    39,662.39x = 1,190,881,765.15
  5. Step 5: Solve for x
    x = 1,190,881,765.15/39,662.39
  6. Step 6: Final answer
    x = 30,025.46

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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.