Home / 12,628.73-17,418.21-9,270.47

Finding the Fourth Proportional to 12,628.73, 17,418.21 and 9,270.47

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Solution

The fourth proportional to 12,628.73, 17,418.21 and 9,270.47 is: 12,786.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,628.73 : 17,418.21 = 9,270.47 : x
  2. Step 2: Convert to fraction form
    12,628.73/17,418.21 = 9,270.47/x
  3. Step 3: Cross multiply
    12,628.73x = 17,418.21 × 9,270.47
  4. Step 4: Simplify right side
    12,628.73x = 161,474,906.17
  5. Step 5: Solve for x
    x = 161,474,906.17/12,628.73
  6. Step 6: Final answer
    x = 12,786.32

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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.