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Finding the Fourth Proportional to 18,520.27, 25,554.03 and 10,968.97

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Solution

The fourth proportional to 18,520.27, 25,554.03 and 10,968.97 is: 15,134.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,520.27 : 25,554.03 = 10,968.97 : x
  2. Step 2: Convert to fraction form
    18,520.27/25,554.03 = 10,968.97/x
  3. Step 3: Cross multiply
    18,520.27x = 25,554.03 × 10,968.97
  4. Step 4: Simplify right side
    18,520.27x = 280,301,388.45
  5. Step 5: Solve for x
    x = 280,301,388.45/18,520.27
  6. Step 6: Final answer
    x = 15,134.84

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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.