Home / 12,982.86-19,491.03-11,145.78

Finding the Fourth Proportional to 12,982.86, 19,491.03 and 11,145.78

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Solution

The fourth proportional to 12,982.86, 19,491.03 and 11,145.78 is: 16,733.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,982.86 : 19,491.03 = 11,145.78 : x
  2. Step 2: Convert to fraction form
    12,982.86/19,491.03 = 11,145.78/x
  3. Step 3: Cross multiply
    12,982.86x = 19,491.03 × 11,145.78
  4. Step 4: Simplify right side
    12,982.86x = 217,242,732.35
  5. Step 5: Solve for x
    x = 217,242,732.35/12,982.86
  6. Step 6: Final answer
    x = 16,733.04

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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.