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Finding the Fourth Proportional to 18,213.56, 25,134.03 and 10,147.02

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Solution

The fourth proportional to 18,213.56, 25,134.03 and 10,147.02 is: 14,002.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,213.56 : 25,134.03 = 10,147.02 : x
  2. Step 2: Convert to fraction form
    18,213.56/25,134.03 = 10,147.02/x
  3. Step 3: Cross multiply
    18,213.56x = 25,134.03 × 10,147.02
  4. Step 4: Simplify right side
    18,213.56x = 255,035,505.09
  5. Step 5: Solve for x
    x = 255,035,505.09/18,213.56
  6. Step 6: Final answer
    x = 14,002.51

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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.