Home / 18,712.39-28,069.19-9,825.47

Finding the Fourth Proportional to 18,712.39, 28,069.19 and 9,825.47

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Solution

The fourth proportional to 18,712.39, 28,069.19 and 9,825.47 is: 14,738.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,712.39 : 28,069.19 = 9,825.47 : x
  2. Step 2: Convert to fraction form
    18,712.39/28,069.19 = 9,825.47/x
  3. Step 3: Cross multiply
    18,712.39x = 28,069.19 × 9,825.47
  4. Step 4: Simplify right side
    18,712.39x = 275,792,984.27
  5. Step 5: Solve for x
    x = 275,792,984.27/18,712.39
  6. Step 6: Final answer
    x = 14,738.52

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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.