Home / 12,086.85-16,679.81-6,781.69

Finding the Fourth Proportional to 12,086.85, 16,679.81 and 6,781.69

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Solution

The fourth proportional to 12,086.85, 16,679.81 and 6,781.69 is: 9,358.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,086.85 : 16,679.81 = 6,781.69 : x
  2. Step 2: Convert to fraction form
    12,086.85/16,679.81 = 6,781.69/x
  3. Step 3: Cross multiply
    12,086.85x = 16,679.81 × 6,781.69
  4. Step 4: Simplify right side
    12,086.85x = 113,117,183.37
  5. Step 5: Solve for x
    x = 113,117,183.37/12,086.85
  6. Step 6: Final answer
    x = 9,358.70

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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.