Home / 20,324,870,929.78-28,049,078,845.56-12,187,999,102.12

Finding the Fourth Proportional to 20,324,870,929.78, 28,049,078,845.56 and 12,187,999,102.12

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Solution

The fourth proportional to 20,324,870,929.78, 28,049,078,845.56 and 12,187,999,102.12 is: 16,819,892,680.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,324,870,929.78 : 28,049,078,845.56 = 12,187,999,102.12 : x
  2. Step 2: Convert to fraction form
    20,324,870,929.78/28,049,078,845.56 = 12,187,999,102.12/x
  3. Step 3: Cross multiply
    20,324,870,929.78x = 28,049,078,845.56 × 12,187,999,102.12
  4. Step 4: Simplify right side
    20,324,870,929.78x = 341,862,147,784,978,399,232
  5. Step 5: Solve for x
    x = 341,862,147,784,978,399,232/20,324,870,929.78
  6. Step 6: Final answer
    x = 16,819,892,680.55

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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.