Home / 20,502,819.90-30,733,234.65-11,978,768.70

Finding the Fourth Proportional to 20,502,819.90, 30,733,234.65 and 11,978,768.70

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Solution

The fourth proportional to 20,502,819.90, 30,733,234.65 and 11,978,768.70 is: 17,955,886.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,502,819.90 : 30,733,234.65 = 11,978,768.70 : x
  2. Step 2: Convert to fraction form
    20,502,819.90/30,733,234.65 = 11,978,768.70/x
  3. Step 3: Cross multiply
    20,502,819.90x = 30,733,234.65 × 11,978,768.70
  4. Step 4: Simplify right side
    20,502,819.90x = 368,146,309,275,175.44
  5. Step 5: Solve for x
    x = 368,146,309,275,175.44/20,502,819.90
  6. Step 6: Final answer
    x = 17,955,886.61

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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.