Home / 18,514.71-25,550.91-10,131.21

Finding the Fourth Proportional to 18,514.71, 25,550.91 and 10,131.21

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Solution

The fourth proportional to 18,514.71, 25,550.91 and 10,131.21 is: 13,981.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,514.71 : 25,550.91 = 10,131.21 : x
  2. Step 2: Convert to fraction form
    18,514.71/25,550.91 = 10,131.21/x
  3. Step 3: Cross multiply
    18,514.71x = 25,550.91 × 10,131.21
  4. Step 4: Simplify right side
    18,514.71x = 258,861,634.90
  5. Step 5: Solve for x
    x = 258,861,634.90/18,514.71
  6. Step 6: Final answer
    x = 13,981.40

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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.