Home / 20,764,830.90-31,147,246.35-12,261,774.90

Finding the Fourth Proportional to 20,764,830.90, 31,147,246.35 and 12,261,774.90

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Solution

The fourth proportional to 20,764,830.90, 31,147,246.35 and 12,261,774.90 is: 18,392,662.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,764,830.90 : 31,147,246.35 = 12,261,774.90 : x
  2. Step 2: Convert to fraction form
    20,764,830.90/31,147,246.35 = 12,261,774.90/x
  3. Step 3: Cross multiply
    20,764,830.90x = 31,147,246.35 × 12,261,774.90
  4. Step 4: Simplify right side
    20,764,830.90x = 381,920,523,498,546.62
  5. Step 5: Solve for x
    x = 381,920,523,498,546.62/20,764,830.90
  6. Step 6: Final answer
    x = 18,392,662.35

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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.