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Finding the Fourth Proportional to 18,657.23, 27,967.69 and 11,974.88

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Solution

The fourth proportional to 18,657.23, 27,967.69 and 11,974.88 is: 17,950.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,657.23 : 27,967.69 = 11,974.88 : x
  2. Step 2: Convert to fraction form
    18,657.23/27,967.69 = 11,974.88/x
  3. Step 3: Cross multiply
    18,657.23x = 27,967.69 × 11,974.88
  4. Step 4: Simplify right side
    18,657.23x = 334,909,771.61
  5. Step 5: Solve for x
    x = 334,909,771.61/18,657.23
  6. Step 6: Final answer
    x = 17,950.67

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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.