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Finding the Fourth Proportional to 17,953.38, 26,929.71 and 8,085.69

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Solution

The fourth proportional to 17,953.38, 26,929.71 and 8,085.69 is: 12,128.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,953.38 : 26,929.71 = 8,085.69 : x
  2. Step 2: Convert to fraction form
    17,953.38/26,929.71 = 8,085.69/x
  3. Step 3: Cross multiply
    17,953.38x = 26,929.71 × 8,085.69
  4. Step 4: Simplify right side
    17,953.38x = 217,745,286.85
  5. Step 5: Solve for x
    x = 217,745,286.85/17,953.38
  6. Step 6: Final answer
    x = 12,128.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.