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Finding the Fourth Proportional to 8,958.91, 13,436.61 and 8,514.39

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Solution

The fourth proportional to 8,958.91, 13,436.61 and 8,514.39 is: 12,769.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,958.91 : 13,436.61 = 8,514.39 : x
  2. Step 2: Convert to fraction form
    8,958.91/13,436.61 = 8,514.39/x
  3. Step 3: Cross multiply
    8,958.91x = 13,436.61 × 8,514.39
  4. Step 4: Simplify right side
    8,958.91x = 114,404,537.82
  5. Step 5: Solve for x
    x = 114,404,537.82/8,958.91
  6. Step 6: Final answer
    x = 12,769.92

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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.