Home / 12,245,655.20-18,347,487.60-7,983,629.60

Finding the Fourth Proportional to 12,245,655.20, 18,347,487.60 and 7,983,629.60

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Solution

The fourth proportional to 12,245,655.20, 18,347,487.60 and 7,983,629.60 is: 11,961,756.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,245,655.20 : 18,347,487.60 = 7,983,629.60 : x
  2. Step 2: Convert to fraction form
    12,245,655.20/18,347,487.60 = 7,983,629.60/x
  3. Step 3: Cross multiply
    12,245,655.20x = 18,347,487.60 × 7,983,629.60
  4. Step 4: Simplify right side
    12,245,655.20x = 146,479,545,088,992.97
  5. Step 5: Solve for x
    x = 146,479,545,088,992.97/12,245,655.20
  6. Step 6: Final answer
    x = 11,961,756.45

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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.