Home / 28,485,735.28-39,310,261.50-15,433,318.60

Finding the Fourth Proportional to 28,485,735.28, 39,310,261.50 and 15,433,318.60

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Solution

The fourth proportional to 28,485,735.28, 39,310,261.50 and 15,433,318.60 is: 21,297,950.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,485,735.28 : 39,310,261.50 = 15,433,318.60 : x
  2. Step 2: Convert to fraction form
    28,485,735.28/39,310,261.50 = 15,433,318.60/x
  3. Step 3: Cross multiply
    28,485,735.28x = 39,310,261.50 × 15,433,318.60
  4. Step 4: Simplify right side
    28,485,735.28x = 606,687,789,978,813.88
  5. Step 5: Solve for x
    x = 606,687,789,978,813.88/28,485,735.28
  6. Step 6: Final answer
    x = 21,297,950.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.