Home / 20,956,778.73-28,920,310.88-11,789,421.48

Finding the Fourth Proportional to 20,956,778.73, 28,920,310.88 and 11,789,421.48

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Solution

The fourth proportional to 20,956,778.73, 28,920,310.88 and 11,789,421.48 is: 16,269,377.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,956,778.73 : 28,920,310.88 = 11,789,421.48 : x
  2. Step 2: Convert to fraction form
    20,956,778.73/28,920,310.88 = 11,789,421.48/x
  3. Step 3: Cross multiply
    20,956,778.73x = 28,920,310.88 × 11,789,421.48
  4. Step 4: Simplify right side
    20,956,778.73x = 340,953,734,238,002.62
  5. Step 5: Solve for x
    x = 340,953,734,238,002.62/20,956,778.73
  6. Step 6: Final answer
    x = 16,269,377.02

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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.