Home / 20,885,400.74-28,823,676.82-12,186,375.86

Finding the Fourth Proportional to 20,885,400.74, 28,823,676.82 and 12,186,375.86

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Solution

The fourth proportional to 20,885,400.74, 28,823,676.82 and 12,186,375.86 is: 16,818,262.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,885,400.74 : 28,823,676.82 = 12,186,375.86 : x
  2. Step 2: Convert to fraction form
    20,885,400.74/28,823,676.82 = 12,186,375.86/x
  3. Step 3: Cross multiply
    20,885,400.74x = 28,823,676.82 × 12,186,375.86
  4. Step 4: Simplify right side
    20,885,400.74x = 351,256,159,395,689.56
  5. Step 5: Solve for x
    x = 351,256,159,395,689.56/20,885,400.74
  6. Step 6: Final answer
    x = 16,818,262.85

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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.