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Finding the Fourth Proportional to 18,404.40, 27,613.80 and 6,718.80

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Solution

The fourth proportional to 18,404.40, 27,613.80 and 6,718.80 is: 10,080.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,404.40 : 27,613.80 = 6,718.80 : x
  2. Step 2: Convert to fraction form
    18,404.40/27,613.80 = 6,718.80/x
  3. Step 3: Cross multiply
    18,404.40x = 27,613.80 × 6,718.80
  4. Step 4: Simplify right side
    18,404.40x = 185,531,599.44
  5. Step 5: Solve for x
    x = 185,531,599.44/18,404.40
  6. Step 6: Final answer
    x = 10,080.83

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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.