Home / 22,450.56-30,979.41-12,378.41

Finding the Fourth Proportional to 22,450.56, 30,979.41 and 12,378.41

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Solution

The fourth proportional to 22,450.56, 30,979.41 and 12,378.41 is: 17,080.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,450.56 : 30,979.41 = 12,378.41 : x
  2. Step 2: Convert to fraction form
    22,450.56/30,979.41 = 12,378.41/x
  3. Step 3: Cross multiply
    22,450.56x = 30,979.41 × 12,378.41
  4. Step 4: Simplify right side
    22,450.56x = 383,475,838.54
  5. Step 5: Solve for x
    x = 383,475,838.54/22,450.56
  6. Step 6: Final answer
    x = 17,080.90

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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.