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Finding the Fourth Proportional to 18,117.26, 27,044.96 and 16,819.64

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Solution

The fourth proportional to 18,117.26, 27,044.96 and 16,819.64 is: 25,107.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,117.26 : 27,044.96 = 16,819.64 : x
  2. Step 2: Convert to fraction form
    18,117.26/27,044.96 = 16,819.64/x
  3. Step 3: Cross multiply
    18,117.26x = 27,044.96 × 16,819.64
  4. Step 4: Simplify right side
    18,117.26x = 454,886,491.01
  5. Step 5: Solve for x
    x = 454,886,491.01/18,117.26
  6. Step 6: Final answer
    x = 25,107.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.