Home / 9,990.50-13,786.26-5,514.30

Finding the Fourth Proportional to 9,990.50, 13,786.26 and 5,514.30

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Solution

The fourth proportional to 9,990.50, 13,786.26 and 5,514.30 is: 7,609.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,990.50 : 13,786.26 = 5,514.30 : x
  2. Step 2: Convert to fraction form
    9,990.50/13,786.26 = 5,514.30/x
  3. Step 3: Cross multiply
    9,990.50x = 13,786.26 × 5,514.30
  4. Step 4: Simplify right side
    9,990.50x = 76,021,573.52
  5. Step 5: Solve for x
    x = 76,021,573.52/9,990.50
  6. Step 6: Final answer
    x = 7,609.39

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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.