Home / 18,514.80-25,549.20-11,440.08

Finding the Fourth Proportional to 18,514.80, 25,549.20 and 11,440.08

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Solution

The fourth proportional to 18,514.80, 25,549.20 and 11,440.08 is: 15,786.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,514.80 : 25,549.20 = 11,440.08 : x
  2. Step 2: Convert to fraction form
    18,514.80/25,549.20 = 11,440.08/x
  3. Step 3: Cross multiply
    18,514.80x = 25,549.20 × 11,440.08
  4. Step 4: Simplify right side
    18,514.80x = 292,284,891.94
  5. Step 5: Solve for x
    x = 292,284,891.94/18,514.80
  6. Step 6: Final answer
    x = 15,786.55

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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.