Home / 12,358,891.20-18,538,336.80-8,327,812.80

Finding the Fourth Proportional to 12,358,891.20, 18,538,336.80 and 8,327,812.80

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Solution

The fourth proportional to 12,358,891.20, 18,538,336.80 and 8,327,812.80 is: 12,491,719.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,358,891.20 : 18,538,336.80 = 8,327,812.80 : x
  2. Step 2: Convert to fraction form
    12,358,891.20/18,538,336.80 = 8,327,812.80/x
  3. Step 3: Cross multiply
    12,358,891.20x = 18,538,336.80 × 8,327,812.80
  4. Step 4: Simplify right side
    12,358,891.20x = 154,383,798,493,751.03
  5. Step 5: Solve for x
    x = 154,383,798,493,751.03/12,358,891.20
  6. Step 6: Final answer
    x = 12,491,719.20

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1.5x scale

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.