Home / 22,312.26-30,787.49-12,879

Finding the Fourth Proportional to 22,312.26, 30,787.49 and 12,879

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Solution

The fourth proportional to 22,312.26, 30,787.49 and 12,879 is: 17,771.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,312.26 : 30,787.49 = 12,879 : x
  2. Step 2: Convert to fraction form
    22,312.26/30,787.49 = 12,879/x
  3. Step 3: Cross multiply
    22,312.26x = 30,787.49 × 12,879
  4. Step 4: Simplify right side
    22,312.26x = 396,512,115.91
  5. Step 5: Solve for x
    x = 396,512,115.91/22,312.26
  6. Step 6: Final answer
    x = 17,771.04

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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.