Home / 20,753.42-28,638.77-12,796.38

Finding the Fourth Proportional to 20,753.42, 28,638.77 and 12,796.38

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Solution

The fourth proportional to 20,753.42, 28,638.77 and 12,796.38 is: 17,658.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,753.42 : 28,638.77 = 12,796.38 : x
  2. Step 2: Convert to fraction form
    20,753.42/28,638.77 = 12,796.38/x
  3. Step 3: Cross multiply
    20,753.42x = 28,638.77 × 12,796.38
  4. Step 4: Simplify right side
    20,753.42x = 366,472,519.67
  5. Step 5: Solve for x
    x = 366,472,519.67/20,753.42
  6. Step 6: Final answer
    x = 17,658.42

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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.