Home / 20,776,512.60-31,164,768.90-12,592,321.20

Finding the Fourth Proportional to 20,776,512.60, 31,164,768.90 and 12,592,321.20

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Solution

The fourth proportional to 20,776,512.60, 31,164,768.90 and 12,592,321.20 is: 18,888,481.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,776,512.60 : 31,164,768.90 = 12,592,321.20 : x
  2. Step 2: Convert to fraction form
    20,776,512.60/31,164,768.90 = 12,592,321.20/x
  3. Step 3: Cross multiply
    20,776,512.60x = 31,164,768.90 × 12,592,321.20
  4. Step 4: Simplify right side
    20,776,512.60x = 392,436,780,112,570.62
  5. Step 5: Solve for x
    x = 392,436,780,112,570.62/20,776,512.60
  6. Step 6: Final answer
    x = 18,888,481.80

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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.