Home / 11,514.68-15,890.09-6,478.91

Finding the Fourth Proportional to 11,514.68, 15,890.09 and 6,478.91

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Solution

The fourth proportional to 11,514.68, 15,890.09 and 6,478.91 is: 8,940.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,514.68 : 15,890.09 = 6,478.91 : x
  2. Step 2: Convert to fraction form
    11,514.68/15,890.09 = 6,478.91/x
  3. Step 3: Cross multiply
    11,514.68x = 15,890.09 × 6,478.91
  4. Step 4: Simplify right side
    11,514.68x = 102,950,351.16
  5. Step 5: Solve for x
    x = 102,950,351.16/11,514.68
  6. Step 6: Final answer
    x = 8,940.80

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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.