Home / 31,859.50-43,911.92-21,770.44

Finding the Fourth Proportional to 31,859.50, 43,911.92 and 21,770.44

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Solution

The fourth proportional to 31,859.50, 43,911.92 and 21,770.44 is: 30,006.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,859.50 : 43,911.92 = 21,770.44 : x
  2. Step 2: Convert to fraction form
    31,859.50/43,911.92 = 21,770.44/x
  3. Step 3: Cross multiply
    31,859.50x = 43,911.92 × 21,770.44
  4. Step 4: Simplify right side
    31,859.50x = 955,981,819.64
  5. Step 5: Solve for x
    x = 955,981,819.64/31,859.50
  6. Step 6: Final answer
    x = 30,006.18

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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.