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Finding the Fourth Proportional to 12,404.39, 18,615.02 and 4,613.20

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Solution

The fourth proportional to 12,404.39, 18,615.02 and 4,613.20 is: 6,922.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,404.39 : 18,615.02 = 4,613.20 : x
  2. Step 2: Convert to fraction form
    12,404.39/18,615.02 = 4,613.20/x
  3. Step 3: Cross multiply
    12,404.39x = 18,615.02 × 4,613.20
  4. Step 4: Simplify right side
    12,404.39x = 85,874,845.37
  5. Step 5: Solve for x
    x = 85,874,845.37/12,404.39
  6. Step 6: Final answer
    x = 6,922.94

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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.