Home / 11,717.55-16,170.65-6,680.96

Finding the Fourth Proportional to 11,717.55, 16,170.65 and 6,680.96

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Solution

The fourth proportional to 11,717.55, 16,170.65 and 6,680.96 is: 9,219.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,717.55 : 16,170.65 = 6,680.96 : x
  2. Step 2: Convert to fraction form
    11,717.55/16,170.65 = 6,680.96/x
  3. Step 3: Cross multiply
    11,717.55x = 16,170.65 × 6,680.96
  4. Step 4: Simplify right side
    11,717.55x = 108,035,465.82
  5. Step 5: Solve for x
    x = 108,035,465.82/11,717.55
  6. Step 6: Final answer
    x = 9,219.97

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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.