Home / 12,458,043.30-18,687,064.95-12,290,081.70

Finding the Fourth Proportional to 12,458,043.30, 18,687,064.95 and 12,290,081.70

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Solution

The fourth proportional to 12,458,043.30, 18,687,064.95 and 12,290,081.70 is: 18,435,122.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,458,043.30 : 18,687,064.95 = 12,290,081.70 : x
  2. Step 2: Convert to fraction form
    12,458,043.30/18,687,064.95 = 12,290,081.70/x
  3. Step 3: Cross multiply
    12,458,043.30x = 18,687,064.95 × 12,290,081.70
  4. Step 4: Simplify right side
    12,458,043.30x = 229,665,554,968,706.41
  5. Step 5: Solve for x
    x = 229,665,554,968,706.41/12,458,043.30
  6. Step 6: Final answer
    x = 18,435,122.55

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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.