Home / 11,679.91-16,118.63-6,644.86

Finding the Fourth Proportional to 11,679.91, 16,118.63 and 6,644.86

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Solution

The fourth proportional to 11,679.91, 16,118.63 and 6,644.86 is: 9,170.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,679.91 : 16,118.63 = 6,644.86 : x
  2. Step 2: Convert to fraction form
    11,679.91/16,118.63 = 6,644.86/x
  3. Step 3: Cross multiply
    11,679.91x = 16,118.63 × 6,644.86
  4. Step 4: Simplify right side
    11,679.91x = 107,106,039.74
  5. Step 5: Solve for x
    x = 107,106,039.74/11,679.91
  6. Step 6: Final answer
    x = 9,170.11

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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.