Home / 18,514.89-27,722.93-11,109.20

Finding the Fourth Proportional to 18,514.89, 27,722.93 and 11,109.20

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Solution

The fourth proportional to 18,514.89, 27,722.93 and 11,109.20 is: 16,634.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,514.89 : 27,722.93 = 11,109.20 : x
  2. Step 2: Convert to fraction form
    18,514.89/27,722.93 = 11,109.20/x
  3. Step 3: Cross multiply
    18,514.89x = 27,722.93 × 11,109.20
  4. Step 4: Simplify right side
    18,514.89x = 307,979,379.80
  5. Step 5: Solve for x
    x = 307,979,379.80/18,514.89
  6. Step 6: Final answer
    x = 16,634.15

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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.