Home / 9,990.45-13,786.65-5,514.63

Finding the Fourth Proportional to 9,990.45, 13,786.65 and 5,514.63

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Solution

The fourth proportional to 9,990.45, 13,786.65 and 5,514.63 is: 7,610.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,990.45 : 13,786.65 = 5,514.63 : x
  2. Step 2: Convert to fraction form
    9,990.45/13,786.65 = 5,514.63/x
  3. Step 3: Cross multiply
    9,990.45x = 13,786.65 × 5,514.63
  4. Step 4: Simplify right side
    9,990.45x = 76,028,273.69
  5. Step 5: Solve for x
    x = 76,028,273.69/9,990.45
  6. Step 6: Final answer
    x = 7,610.10

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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.