Home / 11,686.18-16,126.22-6,379.92

Finding the Fourth Proportional to 11,686.18, 16,126.22 and 6,379.92

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Solution

The fourth proportional to 11,686.18, 16,126.22 and 6,379.92 is: 8,803.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,686.18 : 16,126.22 = 6,379.92 : x
  2. Step 2: Convert to fraction form
    11,686.18/16,126.22 = 6,379.92/x
  3. Step 3: Cross multiply
    11,686.18x = 16,126.22 × 6,379.92
  4. Step 4: Simplify right side
    11,686.18x = 102,883,993.50
  5. Step 5: Solve for x
    x = 102,883,993.50/11,686.18
  6. Step 6: Final answer
    x = 8,803.90

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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.