Home / 12,691.24-19,018.50-8,738.44

Finding the Fourth Proportional to 12,691.24, 19,018.50 and 8,738.44

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Solution

The fourth proportional to 12,691.24, 19,018.50 and 8,738.44 is: 13,095.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,691.24 : 19,018.50 = 8,738.44 : x
  2. Step 2: Convert to fraction form
    12,691.24/19,018.50 = 8,738.44/x
  3. Step 3: Cross multiply
    12,691.24x = 19,018.50 × 8,738.44
  4. Step 4: Simplify right side
    12,691.24x = 166,192,021.14
  5. Step 5: Solve for x
    x = 166,192,021.14/12,691.24
  6. Step 6: Final answer
    x = 13,095.02

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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.