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Finding the Fourth Proportional to 18,425.53, 27,638.57 and 6,738.63

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Solution

The fourth proportional to 18,425.53, 27,638.57 and 6,738.63 is: 10,108.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,425.53 : 27,638.57 = 6,738.63 : x
  2. Step 2: Convert to fraction form
    18,425.53/27,638.57 = 6,738.63/x
  3. Step 3: Cross multiply
    18,425.53x = 27,638.57 × 6,738.63
  4. Step 4: Simplify right side
    18,425.53x = 186,246,096.96
  5. Step 5: Solve for x
    x = 186,246,096.96/18,425.53
  6. Step 6: Final answer
    x = 10,108.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.