Home / 11,721.32-16,174.84-6,416

Finding the Fourth Proportional to 11,721.32, 16,174.84 and 6,416

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Solution

The fourth proportional to 11,721.32, 16,174.84 and 6,416 is: 8,853.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,721.32 : 16,174.84 = 6,416 : x
  2. Step 2: Convert to fraction form
    11,721.32/16,174.84 = 6,416/x
  3. Step 3: Cross multiply
    11,721.32x = 16,174.84 × 6,416
  4. Step 4: Simplify right side
    11,721.32x = 103,777,773.44
  5. Step 5: Solve for x
    x = 103,777,773.44/11,721.32
  6. Step 6: Final answer
    x = 8,853.76

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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.