Home / 12,218,405.40-18,327,608.10-3,698,741.87

Finding the Fourth Proportional to 12,218,405.40, 18,327,608.10 and 3,698,741.87

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Solution

The fourth proportional to 12,218,405.40, 18,327,608.10 and 3,698,741.87 is: 5,548,112.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,218,405.40 : 18,327,608.10 = 3,698,741.87 : x
  2. Step 2: Convert to fraction form
    12,218,405.40/18,327,608.10 = 3,698,741.87/x
  3. Step 3: Cross multiply
    12,218,405.40x = 18,327,608.10 × 3,698,741.87
  4. Step 4: Simplify right side
    12,218,405.40x = 67,789,091,433,511.64
  5. Step 5: Solve for x
    x = 67,789,091,433,511.64/12,218,405.40
  6. Step 6: Final answer
    x = 5,548,112.80

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Similar ratio
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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.