Home / 13,419,766.72-20,129,087.80-4,321,662.92

Finding the Fourth Proportional to 13,419,766.72, 20,129,087.80 and 4,321,662.92

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Solution

The fourth proportional to 13,419,766.72, 20,129,087.80 and 4,321,662.92 is: 6,482,313.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,419,766.72 : 20,129,087.80 = 4,321,662.92 : x
  2. Step 2: Convert to fraction form
    13,419,766.72/20,129,087.80 = 4,321,662.92/x
  3. Step 3: Cross multiply
    13,419,766.72x = 20,129,087.80 × 4,321,662.92
  4. Step 4: Simplify right side
    13,419,766.72x = 86,991,132,358,684.38
  5. Step 5: Solve for x
    x = 86,991,132,358,684.38/13,419,766.72
  6. Step 6: Final answer
    x = 6,482,313.30

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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.