Home / 12,021,966.41-18,022,246.61-4,343,898.78

Finding the Fourth Proportional to 12,021,966.41, 18,022,246.61 and 4,343,898.78

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Solution

The fourth proportional to 12,021,966.41, 18,022,246.61 and 4,343,898.78 is: 6,511,980.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,021,966.41 : 18,022,246.61 = 4,343,898.78 : x
  2. Step 2: Convert to fraction form
    12,021,966.41/18,022,246.61 = 4,343,898.78/x
  3. Step 3: Cross multiply
    12,021,966.41x = 18,022,246.61 × 4,343,898.78
  4. Step 4: Simplify right side
    12,021,966.41x = 78,286,815,040,318.66
  5. Step 5: Solve for x
    x = 78,286,815,040,318.66/12,021,966.41
  6. Step 6: Final answer
    x = 6,511,980.85

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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.