Home / 18,946,956.80-28,420,435.20-5,485,145.60

Finding the Fourth Proportional to 18,946,956.80, 28,420,435.20 and 5,485,145.60

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Solution

The fourth proportional to 18,946,956.80, 28,420,435.20 and 5,485,145.60 is: 8,227,718.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,946,956.80 : 28,420,435.20 = 5,485,145.60 : x
  2. Step 2: Convert to fraction form
    18,946,956.80/28,420,435.20 = 5,485,145.60/x
  3. Step 3: Cross multiply
    18,946,956.80x = 28,420,435.20 × 5,485,145.60
  4. Step 4: Simplify right side
    18,946,956.80x = 155,890,225,087,365.09
  5. Step 5: Solve for x
    x = 155,890,225,087,365.09/18,946,956.80
  6. Step 6: Final answer
    x = 8,227,718.40

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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.