Home / 13,513,195.20-18,647,978.92-7,318,191.60

Finding the Fourth Proportional to 13,513,195.20, 18,647,978.92 and 7,318,191.60

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Solution

The fourth proportional to 13,513,195.20, 18,647,978.92 and 7,318,191.60 is: 10,098,979.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,513,195.20 : 18,647,978.92 = 7,318,191.60 : x
  2. Step 2: Convert to fraction form
    13,513,195.20/18,647,978.92 = 7,318,191.60/x
  3. Step 3: Cross multiply
    13,513,195.20x = 18,647,978.92 × 7,318,191.60
  4. Step 4: Simplify right side
    13,513,195.20x = 136,469,482,689,321.08
  5. Step 5: Solve for x
    x = 136,469,482,689,321.08/13,513,195.20
  6. Step 6: Final answer
    x = 10,098,979.60

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1.5x scale

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.