Home / 11,680.81-16,119.05-6,375.61

Finding the Fourth Proportional to 11,680.81, 16,119.05 and 6,375.61

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Solution

The fourth proportional to 11,680.81, 16,119.05 and 6,375.61 is: 8,798.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,680.81 : 16,119.05 = 6,375.61 : x
  2. Step 2: Convert to fraction form
    11,680.81/16,119.05 = 6,375.61/x
  3. Step 3: Cross multiply
    11,680.81x = 16,119.05 × 6,375.61
  4. Step 4: Simplify right side
    11,680.81x = 102,768,800.50
  5. Step 5: Solve for x
    x = 102,768,800.50/11,680.81
  6. Step 6: Final answer
    x = 8,798.09

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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.