Home / 20,297.88-28,010.97-12,338.55

Finding the Fourth Proportional to 20,297.88, 28,010.97 and 12,338.55

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Solution

The fourth proportional to 20,297.88, 28,010.97 and 12,338.55 is: 17,027.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,297.88 : 28,010.97 = 12,338.55 : x
  2. Step 2: Convert to fraction form
    20,297.88/28,010.97 = 12,338.55/x
  3. Step 3: Cross multiply
    20,297.88x = 28,010.97 × 12,338.55
  4. Step 4: Simplify right side
    20,297.88x = 345,614,753.89
  5. Step 5: Solve for x
    x = 345,614,753.89/20,297.88
  6. Step 6: Final answer
    x = 17,027.14

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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.