Home / 13,419,760.71-20,129,078.81-4,321,656.92

Finding the Fourth Proportional to 13,419,760.71, 20,129,078.81 and 4,321,656.92

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Solution

The fourth proportional to 13,419,760.71, 20,129,078.81 and 4,321,656.92 is: 6,482,304.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,419,760.71 : 20,129,078.81 = 4,321,656.92 : x
  2. Step 2: Convert to fraction form
    13,419,760.71/20,129,078.81 = 4,321,656.92/x
  3. Step 3: Cross multiply
    13,419,760.71x = 20,129,078.81 × 4,321,656.92
  4. Step 4: Simplify right side
    13,419,760.71x = 86,990,972,610,208.19
  5. Step 5: Solve for x
    x = 86,990,972,610,208.19/13,419,760.71
  6. Step 6: Final answer
    x = 6,482,304.30

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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.