Home / 20,446.49-28,215.43-11,371.80

Finding the Fourth Proportional to 20,446.49, 28,215.43 and 11,371.80

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Solution

The fourth proportional to 20,446.49, 28,215.43 and 11,371.80 is: 15,692.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,446.49 : 28,215.43 = 11,371.80 : x
  2. Step 2: Convert to fraction form
    20,446.49/28,215.43 = 11,371.80/x
  3. Step 3: Cross multiply
    20,446.49x = 28,215.43 × 11,371.80
  4. Step 4: Simplify right side
    20,446.49x = 320,860,198.44
  5. Step 5: Solve for x
    x = 320,860,198.44/20,446.49
  6. Step 6: Final answer
    x = 15,692.68

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1.5x scale

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.