Home / 11,641.68-16,084.32-8,120.61

Finding the Fourth Proportional to 11,641.68, 16,084.32 and 8,120.61

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Solution

The fourth proportional to 11,641.68, 16,084.32 and 8,120.61 is: 11,219.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,641.68 : 16,084.32 = 8,120.61 : x
  2. Step 2: Convert to fraction form
    11,641.68/16,084.32 = 8,120.61/x
  3. Step 3: Cross multiply
    11,641.68x = 16,084.32 × 8,120.61
  4. Step 4: Simplify right side
    11,641.68x = 130,614,489.84
  5. Step 5: Solve for x
    x = 130,614,489.84/11,641.68
  6. Step 6: Final answer
    x = 11,219.56

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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.