Home / 11,456.90-15,811.13-6,422.73

Finding the Fourth Proportional to 11,456.90, 15,811.13 and 6,422.73

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Solution

The fourth proportional to 11,456.90, 15,811.13 and 6,422.73 is: 8,863.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,456.90 : 15,811.13 = 6,422.73 : x
  2. Step 2: Convert to fraction form
    11,456.90/15,811.13 = 6,422.73/x
  3. Step 3: Cross multiply
    11,456.90x = 15,811.13 × 6,422.73
  4. Step 4: Simplify right side
    11,456.90x = 101,550,586.87
  5. Step 5: Solve for x
    x = 101,550,586.87/11,456.90
  6. Step 6: Final answer
    x = 8,863.71

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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.