Home / 31,579.62-43,594.05-20,830.83

Finding the Fourth Proportional to 31,579.62, 43,594.05 and 20,830.83

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Solution

The fourth proportional to 31,579.62, 43,594.05 and 20,830.83 is: 28,755.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,579.62 : 43,594.05 = 20,830.83 : x
  2. Step 2: Convert to fraction form
    31,579.62/43,594.05 = 20,830.83/x
  3. Step 3: Cross multiply
    31,579.62x = 43,594.05 × 20,830.83
  4. Step 4: Simplify right side
    31,579.62x = 908,100,244.56
  5. Step 5: Solve for x
    x = 908,100,244.56/31,579.62
  6. Step 6: Final answer
    x = 28,755.90

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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.