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Finding the Fourth Proportional to 11,863.91, 16,373.82 and 6,828.03

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Solution

The fourth proportional to 11,863.91, 16,373.82 and 6,828.03 is: 9,423.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,863.91 : 16,373.82 = 6,828.03 : x
  2. Step 2: Convert to fraction form
    11,863.91/16,373.82 = 6,828.03/x
  3. Step 3: Cross multiply
    11,863.91x = 16,373.82 × 6,828.03
  4. Step 4: Simplify right side
    11,863.91x = 111,800,934.17
  5. Step 5: Solve for x
    x = 111,800,934.17/11,863.91
  6. Step 6: Final answer
    x = 9,423.62

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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.