Home / 12,425.28-18,628.83-3,986.97

Finding the Fourth Proportional to 12,425.28, 18,628.83 and 3,986.97

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Solution

The fourth proportional to 12,425.28, 18,628.83 and 3,986.97 is: 5,977.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,425.28 : 18,628.83 = 3,986.97 : x
  2. Step 2: Convert to fraction form
    12,425.28/18,628.83 = 3,986.97/x
  3. Step 3: Cross multiply
    12,425.28x = 18,628.83 × 3,986.97
  4. Step 4: Simplify right side
    12,425.28x = 74,272,516.49
  5. Step 5: Solve for x
    x = 74,272,516.49/12,425.28
  6. Step 6: Final answer
    x = 5,977.53

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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.