Home / 20,572,372.86-30,864,990.28-12,383,982.42

Finding the Fourth Proportional to 20,572,372.86, 30,864,990.28 and 12,383,982.42

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Solution

The fourth proportional to 20,572,372.86, 30,864,990.28 and 12,383,982.42 is: 18,579,844.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,572,372.86 : 30,864,990.28 = 12,383,982.42 : x
  2. Step 2: Convert to fraction form
    20,572,372.86/30,864,990.28 = 12,383,982.42/x
  3. Step 3: Cross multiply
    20,572,372.86x = 30,864,990.28 × 12,383,982.42
  4. Step 4: Simplify right side
    20,572,372.86x = 382,231,497,020,990.88
  5. Step 5: Solve for x
    x = 382,231,497,020,990.88/20,572,372.86
  6. Step 6: Final answer
    x = 18,579,844.90

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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.