Home / 11,711.27-16,161.30-6,405.90

Finding the Fourth Proportional to 11,711.27, 16,161.30 and 6,405.90

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Solution

The fourth proportional to 11,711.27, 16,161.30 and 6,405.90 is: 8,840.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,711.27 : 16,161.30 = 6,405.90 : x
  2. Step 2: Convert to fraction form
    11,711.27/16,161.30 = 6,405.90/x
  3. Step 3: Cross multiply
    11,711.27x = 16,161.30 × 6,405.90
  4. Step 4: Simplify right side
    11,711.27x = 103,527,671.67
  5. Step 5: Solve for x
    x = 103,527,671.67/11,711.27
  6. Step 6: Final answer
    x = 8,840.01

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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.