Home / 11,711.13-16,161.36-6,405.96

Finding the Fourth Proportional to 11,711.13, 16,161.36 and 6,405.96

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Solution

The fourth proportional to 11,711.13, 16,161.36 and 6,405.96 is: 8,840.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,711.13 : 16,161.36 = 6,405.96 : x
  2. Step 2: Convert to fraction form
    11,711.13/16,161.36 = 6,405.96/x
  3. Step 3: Cross multiply
    11,711.13x = 16,161.36 × 6,405.96
  4. Step 4: Simplify right side
    11,711.13x = 103,529,025.71
  5. Step 5: Solve for x
    x = 103,529,025.71/11,711.13
  6. Step 6: Final answer
    x = 8,840.23

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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.