Home / 11,685.70-16,126.61-6,380.87

Finding the Fourth Proportional to 11,685.70, 16,126.61 and 6,380.87

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Solution

The fourth proportional to 11,685.70, 16,126.61 and 6,380.87 is: 8,805.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,685.70 : 16,126.61 = 6,380.87 : x
  2. Step 2: Convert to fraction form
    11,685.70/16,126.61 = 6,380.87/x
  3. Step 3: Cross multiply
    11,685.70x = 16,126.61 × 6,380.87
  4. Step 4: Simplify right side
    11,685.70x = 102,901,689.41
  5. Step 5: Solve for x
    x = 102,901,689.41/11,685.70
  6. Step 6: Final answer
    x = 8,805.78

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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.