Home / 20,270.43-27,965.25-11,771.10

Finding the Fourth Proportional to 20,270.43, 27,965.25 and 11,771.10

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Solution

The fourth proportional to 20,270.43, 27,965.25 and 11,771.10 is: 16,239.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,270.43 : 27,965.25 = 11,771.10 : x
  2. Step 2: Convert to fraction form
    20,270.43/27,965.25 = 11,771.10/x
  3. Step 3: Cross multiply
    20,270.43x = 27,965.25 × 11,771.10
  4. Step 4: Simplify right side
    20,270.43x = 329,181,754.28
  5. Step 5: Solve for x
    x = 329,181,754.28/20,270.43
  6. Step 6: Final answer
    x = 16,239.51

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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.