Home / 11,679.15-16,116.72-6,642.66

Finding the Fourth Proportional to 11,679.15, 16,116.72 and 6,642.66

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Solution

The fourth proportional to 11,679.15, 16,116.72 and 6,642.66 is: 9,166.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,679.15 : 16,116.72 = 6,642.66 : x
  2. Step 2: Convert to fraction form
    11,679.15/16,116.72 = 6,642.66/x
  3. Step 3: Cross multiply
    11,679.15x = 16,116.72 × 6,642.66
  4. Step 4: Simplify right side
    11,679.15x = 107,057,891.28
  5. Step 5: Solve for x
    x = 107,057,891.28/11,679.15
  6. Step 6: Final answer
    x = 9,166.58

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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.