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Finding the Fourth Proportional to 12,412.88, 18,613.56 and 4,204.88

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Solution

The fourth proportional to 12,412.88, 18,613.56 and 4,204.88 is: 6,305.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,412.88 : 18,613.56 = 4,204.88 : x
  2. Step 2: Convert to fraction form
    12,412.88/18,613.56 = 4,204.88/x
  3. Step 3: Cross multiply
    12,412.88x = 18,613.56 × 4,204.88
  4. Step 4: Simplify right side
    12,412.88x = 78,267,786.17
  5. Step 5: Solve for x
    x = 78,267,786.17/12,412.88
  6. Step 6: Final answer
    x = 6,305.37

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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.