Home / 20,243.40-27,935.94-11,290.68

Finding the Fourth Proportional to 20,243.40, 27,935.94 and 11,290.68

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Solution

The fourth proportional to 20,243.40, 27,935.94 and 11,290.68 is: 15,581.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,243.40 : 27,935.94 = 11,290.68 : x
  2. Step 2: Convert to fraction form
    20,243.40/27,935.94 = 11,290.68/x
  3. Step 3: Cross multiply
    20,243.40x = 27,935.94 × 11,290.68
  4. Step 4: Simplify right side
    20,243.40x = 315,415,562.91
  5. Step 5: Solve for x
    x = 315,415,562.91/20,243.40
  6. Step 6: Final answer
    x = 15,581.16

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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.