Home / 20,052.75-27,672.40-11,100.25

Finding the Fourth Proportional to 20,052.75, 27,672.40 and 11,100.25

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Solution

The fourth proportional to 20,052.75, 27,672.40 and 11,100.25 is: 15,318.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,052.75 : 27,672.40 = 11,100.25 : x
  2. Step 2: Convert to fraction form
    20,052.75/27,672.40 = 11,100.25/x
  3. Step 3: Cross multiply
    20,052.75x = 27,672.40 × 11,100.25
  4. Step 4: Simplify right side
    20,052.75x = 307,170,502.60
  5. Step 5: Solve for x
    x = 307,170,502.60/20,052.75
  6. Step 6: Final answer
    x = 15,318.12

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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.