Home / 12,458,431.30-18,687,646.95-12,290,469.70

Finding the Fourth Proportional to 12,458,431.30, 18,687,646.95 and 12,290,469.70

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Solution

The fourth proportional to 12,458,431.30, 18,687,646.95 and 12,290,469.70 is: 18,435,704.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,458,431.30 : 18,687,646.95 = 12,290,469.70 : x
  2. Step 2: Convert to fraction form
    12,458,431.30/18,687,646.95 = 12,290,469.70/x
  3. Step 3: Cross multiply
    12,458,431.30x = 18,687,646.95 × 12,290,469.70
  4. Step 4: Simplify right side
    12,458,431.30x = 229,679,958,603,272.41
  5. Step 5: Solve for x
    x = 229,679,958,603,272.41/12,458,431.30
  6. Step 6: Final answer
    x = 18,435,704.55

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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.