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Finding the Fourth Proportional to 18,519.42, 27,756.42 and 9,748.74

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Solution

The fourth proportional to 18,519.42, 27,756.42 and 9,748.74 is: 14,611.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,519.42 : 27,756.42 = 9,748.74 : x
  2. Step 2: Convert to fraction form
    18,519.42/27,756.42 = 9,748.74/x
  3. Step 3: Cross multiply
    18,519.42x = 27,756.42 × 9,748.74
  4. Step 4: Simplify right side
    18,519.42x = 270,590,121.91
  5. Step 5: Solve for x
    x = 270,590,121.91/18,519.42
  6. Step 6: Final answer
    x = 14,611.16

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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.