Home / 12,438,868.11-18,659,246.82-4,238,961.90

Finding the Fourth Proportional to 12,438,868.11, 18,659,246.82 and 4,238,961.90

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Solution

The fourth proportional to 12,438,868.11, 18,659,246.82 and 4,238,961.90 is: 6,358,764.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,438,868.11 : 18,659,246.82 = 4,238,961.90 : x
  2. Step 2: Convert to fraction form
    12,438,868.11/18,659,246.82 = 4,238,961.90/x
  3. Step 3: Cross multiply
    12,438,868.11x = 18,659,246.82 × 4,238,961.90
  4. Step 4: Simplify right side
    12,438,868.11x = 79,095,836,352,676.17
  5. Step 5: Solve for x
    x = 79,095,836,352,676.17/12,438,868.11
  6. Step 6: Final answer
    x = 6,358,764.77

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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.