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Finding the Fourth Proportional to 18,630.99, 25,704.48 and 10,563.78

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Solution

The fourth proportional to 18,630.99, 25,704.48 and 10,563.78 is: 14,574.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,630.99 : 25,704.48 = 10,563.78 : x
  2. Step 2: Convert to fraction form
    18,630.99/25,704.48 = 10,563.78/x
  3. Step 3: Cross multiply
    18,630.99x = 25,704.48 × 10,563.78
  4. Step 4: Simplify right side
    18,630.99x = 271,536,471.73
  5. Step 5: Solve for x
    x = 271,536,471.73/18,630.99
  6. Step 6: Final answer
    x = 14,574.45

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Similar ratio
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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.