Home / 20,902.27-28,845.62-11,950.61

Finding the Fourth Proportional to 20,902.27, 28,845.62 and 11,950.61

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Solution

The fourth proportional to 20,902.27, 28,845.62 and 11,950.61 is: 16,492.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,902.27 : 28,845.62 = 11,950.61 : x
  2. Step 2: Convert to fraction form
    20,902.27/28,845.62 = 11,950.61/x
  3. Step 3: Cross multiply
    20,902.27x = 28,845.62 × 11,950.61
  4. Step 4: Simplify right side
    20,902.27x = 344,722,754.83
  5. Step 5: Solve for x
    x = 344,722,754.83/20,902.27
  6. Step 6: Final answer
    x = 16,492.12

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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.