Home / 20,092.05-27,727.88-11,139.39

Finding the Fourth Proportional to 20,092.05, 27,727.88 and 11,139.39

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Solution

The fourth proportional to 20,092.05, 27,727.88 and 11,139.39 is: 15,372.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,092.05 : 27,727.88 = 11,139.39 : x
  2. Step 2: Convert to fraction form
    20,092.05/27,727.88 = 11,139.39/x
  3. Step 3: Cross multiply
    20,092.05x = 27,727.88 × 11,139.39
  4. Step 4: Simplify right side
    20,092.05x = 308,871,613.50
  5. Step 5: Solve for x
    x = 308,871,613.50/20,092.05
  6. Step 6: Final answer
    x = 15,372.83

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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.