Home / 12,521.43-17,279.58-7,805.73

Finding the Fourth Proportional to 12,521.43, 17,279.58 and 7,805.73

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Solution

The fourth proportional to 12,521.43, 17,279.58 and 7,805.73 is: 10,771.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,521.43 : 17,279.58 = 7,805.73 : x
  2. Step 2: Convert to fraction form
    12,521.43/17,279.58 = 7,805.73/x
  3. Step 3: Cross multiply
    12,521.43x = 17,279.58 × 7,805.73
  4. Step 4: Simplify right side
    12,521.43x = 134,879,735.99
  5. Step 5: Solve for x
    x = 134,879,735.99/12,521.43
  6. Step 6: Final answer
    x = 10,771.91

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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.