Home / 20,440,321.78-30,668,662.06-8,310,717.58

Finding the Fourth Proportional to 20,440,321.78, 30,668,662.06 and 8,310,717.58

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Solution

The fourth proportional to 20,440,321.78, 30,668,662.06 and 8,310,717.58 is: 12,469,401.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,440,321.78 : 30,668,662.06 = 8,310,717.58 : x
  2. Step 2: Convert to fraction form
    20,440,321.78/30,668,662.06 = 8,310,717.58/x
  3. Step 3: Cross multiply
    20,440,321.78x = 30,668,662.06 × 8,310,717.58
  4. Step 4: Simplify right side
    20,440,321.78x = 254,878,588,937,121
  5. Step 5: Solve for x
    x = 254,878,588,937,121/20,440,321.78
  6. Step 6: Final answer
    x = 12,469,401.98

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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.