Home / 11,711.55-16,161.96-6,406.38

Finding the Fourth Proportional to 11,711.55, 16,161.96 and 6,406.38

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Solution

The fourth proportional to 11,711.55, 16,161.96 and 6,406.38 is: 8,840.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,711.55 : 16,161.96 = 6,406.38 : x
  2. Step 2: Convert to fraction form
    11,711.55/16,161.96 = 6,406.38/x
  3. Step 3: Cross multiply
    11,711.55x = 16,161.96 × 6,406.38
  4. Step 4: Simplify right side
    11,711.55x = 103,539,657.30
  5. Step 5: Solve for x
    x = 103,539,657.30/11,711.55
  6. Step 6: Final answer
    x = 8,840.82

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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.