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Finding the Fourth Proportional to 18,425.70, 27,642.74 and 6,738.92

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Solution

The fourth proportional to 18,425.70, 27,642.74 and 6,738.92 is: 10,109.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,425.70 : 27,642.74 = 6,738.92 : x
  2. Step 2: Convert to fraction form
    18,425.70/27,642.74 = 6,738.92/x
  3. Step 3: Cross multiply
    18,425.70x = 27,642.74 × 6,738.92
  4. Step 4: Simplify right side
    18,425.70x = 186,282,213.44
  5. Step 5: Solve for x
    x = 186,282,213.44/18,425.70
  6. Step 6: Final answer
    x = 10,109.91

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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.