Home / 13,628.69-18,806.97-7,963.95

Finding the Fourth Proportional to 13,628.69, 18,806.97 and 7,963.95

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Solution

The fourth proportional to 13,628.69, 18,806.97 and 7,963.95 is: 10,989.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,628.69 : 18,806.97 = 7,963.95 : x
  2. Step 2: Convert to fraction form
    13,628.69/18,806.97 = 7,963.95/x
  3. Step 3: Cross multiply
    13,628.69x = 18,806.97 × 7,963.95
  4. Step 4: Simplify right side
    13,628.69x = 149,777,768.73
  5. Step 5: Solve for x
    x = 149,777,768.73/13,628.69
  6. Step 6: Final answer
    x = 10,989.89

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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.