Home / 21,990,432.40-32,929,661.40-20,982,662.80

Finding the Fourth Proportional to 21,990,432.40, 32,929,661.40 and 20,982,662.80

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Solution

The fourth proportional to 21,990,432.40, 32,929,661.40 and 20,982,662.80 is: 31,420,572.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,990,432.40 : 32,929,661.40 = 20,982,662.80 : x
  2. Step 2: Convert to fraction form
    21,990,432.40/32,929,661.40 = 20,982,662.80/x
  3. Step 3: Cross multiply
    21,990,432.40x = 32,929,661.40 × 20,982,662.80
  4. Step 4: Simplify right side
    21,990,432.40x = 690,951,981,274,375.88
  5. Step 5: Solve for x
    x = 690,951,981,274,375.88/21,990,432.40
  6. Step 6: Final answer
    x = 31,420,572.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.