Home / 28,288,986.92-39,048,359.82-18,379,427.48

Finding the Fourth Proportional to 28,288,986.92, 39,048,359.82 and 18,379,427.48

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Solution

The fourth proportional to 28,288,986.92, 39,048,359.82 and 18,379,427.48 is: 25,369,819.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,288,986.92 : 39,048,359.82 = 18,379,427.48 : x
  2. Step 2: Convert to fraction form
    28,288,986.92/39,048,359.82 = 18,379,427.48/x
  3. Step 3: Cross multiply
    28,288,986.92x = 39,048,359.82 × 18,379,427.48
  4. Step 4: Simplify right side
    28,288,986.92x = 717,686,497,524,635.88
  5. Step 5: Solve for x
    x = 717,686,497,524,635.88/28,288,986.92
  6. Step 6: Final answer
    x = 25,369,819.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.