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Finding the Fourth Proportional to 20,795.66, 28,697.97 and 11,843.17

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Solution

The fourth proportional to 20,795.66, 28,697.97 and 11,843.17 is: 16,343.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,795.66 : 28,697.97 = 11,843.17 : x
  2. Step 2: Convert to fraction form
    20,795.66/28,697.97 = 11,843.17/x
  3. Step 3: Cross multiply
    20,795.66x = 28,697.97 × 11,843.17
  4. Step 4: Simplify right side
    20,795.66x = 339,874,937.36
  5. Step 5: Solve for x
    x = 339,874,937.36/20,795.66
  6. Step 6: Final answer
    x = 16,343.55

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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.