Home / 12,979.75-19,472.05-4,213.52

Finding the Fourth Proportional to 12,979.75, 19,472.05 and 4,213.52

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Solution

The fourth proportional to 12,979.75, 19,472.05 and 4,213.52 is: 6,321.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,979.75 : 19,472.05 = 4,213.52 : x
  2. Step 2: Convert to fraction form
    12,979.75/19,472.05 = 4,213.52/x
  3. Step 3: Cross multiply
    12,979.75x = 19,472.05 × 4,213.52
  4. Step 4: Simplify right side
    12,979.75x = 82,045,872.12
  5. Step 5: Solve for x
    x = 82,045,872.12/12,979.75
  6. Step 6: Final answer
    x = 6,321.07

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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.