Home / 20,835.38-28,753.43-11,404.55

Finding the Fourth Proportional to 20,835.38, 28,753.43 and 11,404.55

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Solution

The fourth proportional to 20,835.38, 28,753.43 and 11,404.55 is: 15,738.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.38 : 28,753.43 = 11,404.55 : x
  2. Step 2: Convert to fraction form
    20,835.38/28,753.43 = 11,404.55/x
  3. Step 3: Cross multiply
    20,835.38x = 28,753.43 × 11,404.55
  4. Step 4: Simplify right side
    20,835.38x = 327,919,930.11
  5. Step 5: Solve for x
    x = 327,919,930.11/20,835.38
  6. Step 6: Final answer
    x = 15,738.61

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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.