Home / 15,514.88-21,414.94-9,145.18

Finding the Fourth Proportional to 15,514.88, 21,414.94 and 9,145.18

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Solution

The fourth proportional to 15,514.88, 21,414.94 and 9,145.18 is: 12,622.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,514.88 : 21,414.94 = 9,145.18 : x
  2. Step 2: Convert to fraction form
    15,514.88/21,414.94 = 9,145.18/x
  3. Step 3: Cross multiply
    15,514.88x = 21,414.94 × 9,145.18
  4. Step 4: Simplify right side
    15,514.88x = 195,843,480.99
  5. Step 5: Solve for x
    x = 195,843,480.99/15,514.88
  6. Step 6: Final answer
    x = 12,622.95

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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.