Home / 22,450.16-30,979.56-12,378.80

Finding the Fourth Proportional to 22,450.16, 30,979.56 and 12,378.80

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Solution

The fourth proportional to 22,450.16, 30,979.56 and 12,378.80 is: 17,081.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,450.16 : 30,979.56 = 12,378.80 : x
  2. Step 2: Convert to fraction form
    22,450.16/30,979.56 = 12,378.80/x
  3. Step 3: Cross multiply
    22,450.16x = 30,979.56 × 12,378.80
  4. Step 4: Simplify right side
    22,450.16x = 383,489,777.33
  5. Step 5: Solve for x
    x = 383,489,777.33/22,450.16
  6. Step 6: Final answer
    x = 17,081.83

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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.