Home / 22,260.92-30,721.55-12,830.09

Finding the Fourth Proportional to 22,260.92, 30,721.55 and 12,830.09

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Solution

The fourth proportional to 22,260.92, 30,721.55 and 12,830.09 is: 17,706.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,260.92 : 30,721.55 = 12,830.09 : x
  2. Step 2: Convert to fraction form
    22,260.92/30,721.55 = 12,830.09/x
  3. Step 3: Cross multiply
    22,260.92x = 30,721.55 × 12,830.09
  4. Step 4: Simplify right side
    22,260.92x = 394,160,033.68
  5. Step 5: Solve for x
    x = 394,160,033.68/22,260.92
  6. Step 6: Final answer
    x = 17,706.37

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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.