Home / 20,131,234.60-30,188,978.70-7,345,157.80

Finding the Fourth Proportional to 20,131,234.60, 30,188,978.70 and 7,345,157.80

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Solution

The fourth proportional to 20,131,234.60, 30,188,978.70 and 7,345,157.80 is: 11,014,864.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,131,234.60 : 30,188,978.70 = 7,345,157.80 : x
  2. Step 2: Convert to fraction form
    20,131,234.60/30,188,978.70 = 7,345,157.80/x
  3. Step 3: Cross multiply
    20,131,234.60x = 30,188,978.70 × 7,345,157.80
  4. Step 4: Simplify right side
    20,131,234.60x = 221,742,812,372,338.84
  5. Step 5: Solve for x
    x = 221,742,812,372,338.84/20,131,234.60
  6. Step 6: Final answer
    x = 11,014,864.05

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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.