Home / 12,836.45-17,581.36-12,079.78

Finding the Fourth Proportional to 12,836.45, 17,581.36 and 12,079.78

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Solution

The fourth proportional to 12,836.45, 17,581.36 and 12,079.78 is: 16,544.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,836.45 : 17,581.36 = 12,079.78 : x
  2. Step 2: Convert to fraction form
    12,836.45/17,581.36 = 12,079.78/x
  3. Step 3: Cross multiply
    12,836.45x = 17,581.36 × 12,079.78
  4. Step 4: Simplify right side
    12,836.45x = 212,378,960.90
  5. Step 5: Solve for x
    x = 212,378,960.90/12,836.45
  6. Step 6: Final answer
    x = 16,544.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.