Home / 20,284.47-27,992.56-11,331.97

Finding the Fourth Proportional to 20,284.47, 27,992.56 and 11,331.97

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Solution

The fourth proportional to 20,284.47, 27,992.56 and 11,331.97 is: 15,638.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,284.47 : 27,992.56 = 11,331.97 : x
  2. Step 2: Convert to fraction form
    20,284.47/27,992.56 = 11,331.97/x
  3. Step 3: Cross multiply
    20,284.47x = 27,992.56 × 11,331.97
  4. Step 4: Simplify right side
    20,284.47x = 317,210,850.14
  5. Step 5: Solve for x
    x = 317,210,850.14/20,284.47
  6. Step 6: Final answer
    x = 15,638.12

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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.