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Finding the Fourth Proportional to 18,287.46, 27,425.74 and 7,757.32

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Solution

The fourth proportional to 18,287.46, 27,425.74 and 7,757.32 is: 11,633.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,287.46 : 27,425.74 = 7,757.32 : x
  2. Step 2: Convert to fraction form
    18,287.46/27,425.74 = 7,757.32/x
  3. Step 3: Cross multiply
    18,287.46x = 27,425.74 × 7,757.32
  4. Step 4: Simplify right side
    18,287.46x = 212,750,241.42
  5. Step 5: Solve for x
    x = 212,750,241.42/18,287.46
  6. Step 6: Final answer
    x = 11,633.67

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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.