Home / 20,105.67-27,727.66-12,552.69

Finding the Fourth Proportional to 20,105.67, 27,727.66 and 12,552.69

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Solution

The fourth proportional to 20,105.67, 27,727.66 and 12,552.69 is: 17,311.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,105.67 : 27,727.66 = 12,552.69 : x
  2. Step 2: Convert to fraction form
    20,105.67/27,727.66 = 12,552.69/x
  3. Step 3: Cross multiply
    20,105.67x = 27,727.66 × 12,552.69
  4. Step 4: Simplify right side
    20,105.67x = 348,056,720.41
  5. Step 5: Solve for x
    x = 348,056,720.41/20,105.67
  6. Step 6: Final answer
    x = 17,311.37

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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.