Home / 20,985,767.35-28,960,418.90-12,166,932.44

Finding the Fourth Proportional to 20,985,767.35, 28,960,418.90 and 12,166,932.44

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Solution

The fourth proportional to 20,985,767.35, 28,960,418.90 and 12,166,932.44 is: 16,790,401.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,985,767.35 : 28,960,418.90 = 12,166,932.44 : x
  2. Step 2: Convert to fraction form
    20,985,767.35/28,960,418.90 = 12,166,932.44/x
  3. Step 3: Cross multiply
    20,985,767.35x = 28,960,418.90 × 12,166,932.44
  4. Step 4: Simplify right side
    20,985,767.35x = 352,359,460,293,217.50
  5. Step 5: Solve for x
    x = 352,359,460,293,217.50/20,985,767.35
  6. Step 6: Final answer
    x = 16,790,401.54

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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.