Home / 20,270.96-27,974.40-11,318.16

Finding the Fourth Proportional to 20,270.96, 27,974.40 and 11,318.16

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Solution

The fourth proportional to 20,270.96, 27,974.40 and 11,318.16 is: 15,619.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,270.96 : 27,974.40 = 11,318.16 : x
  2. Step 2: Convert to fraction form
    20,270.96/27,974.40 = 11,318.16/x
  3. Step 3: Cross multiply
    20,270.96x = 27,974.40 × 11,318.16
  4. Step 4: Simplify right side
    20,270.96x = 316,618,735.10
  5. Step 5: Solve for x
    x = 316,618,735.10/20,270.96
  6. Step 6: Final answer
    x = 15,619.33

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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.