Home / 20,679,961.20-31,033,938.60-9,314,559.60

Finding the Fourth Proportional to 20,679,961.20, 31,033,938.60 and 9,314,559.60

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Solution

The fourth proportional to 20,679,961.20, 31,033,938.60 and 9,314,559.60 is: 13,978,143.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679,961.20 : 31,033,938.60 = 9,314,559.60 : x
  2. Step 2: Convert to fraction form
    20,679,961.20/31,033,938.60 = 9,314,559.60/x
  3. Step 3: Cross multiply
    20,679,961.20x = 31,033,938.60 × 9,314,559.60
  4. Step 4: Simplify right side
    20,679,961.20x = 289,067,470,712,440.56
  5. Step 5: Solve for x
    x = 289,067,470,712,440.56/20,679,961.20
  6. Step 6: Final answer
    x = 13,978,143.77

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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.