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Finding the Fourth Proportional to 12,305.91, 18,458.91 and 4,514.72

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Solution

The fourth proportional to 12,305.91, 18,458.91 and 4,514.72 is: 6,772.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,305.91 : 18,458.91 = 4,514.72 : x
  2. Step 2: Convert to fraction form
    12,305.91/18,458.91 = 4,514.72/x
  3. Step 3: Cross multiply
    12,305.91x = 18,458.91 × 4,514.72
  4. Step 4: Simplify right side
    12,305.91x = 83,336,717.86
  5. Step 5: Solve for x
    x = 83,336,717.86/12,305.91
  6. Step 6: Final answer
    x = 6,772.09

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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.