Home / 20,930,239.42-28,891,622.30-12,231,239.15

Finding the Fourth Proportional to 20,930,239.42, 28,891,622.30 and 12,231,239.15

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Solution

The fourth proportional to 20,930,239.42, 28,891,622.30 and 12,231,239.15 is: 16,883,721.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,930,239.42 : 28,891,622.30 = 12,231,239.15 : x
  2. Step 2: Convert to fraction form
    20,930,239.42/28,891,622.30 = 12,231,239.15/x
  3. Step 3: Cross multiply
    20,930,239.42x = 28,891,622.30 × 12,231,239.15
  4. Step 4: Simplify right side
    20,930,239.42x = 353,380,341,793,845.94
  5. Step 5: Solve for x
    x = 353,380,341,793,845.94/20,930,239.42
  6. Step 6: Final answer
    x = 16,883,721.91

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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.