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Finding the Fourth Proportional to 19,613.66, 29,403.90 and 8,512.00

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Solution

The fourth proportional to 19,613.66, 29,403.90 and 8,512.00 is: 12,760.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,613.66 : 29,403.90 = 8,512.00 : x
  2. Step 2: Convert to fraction form
    19,613.66/29,403.90 = 8,512.00/x
  3. Step 3: Cross multiply
    19,613.66x = 29,403.90 × 8,512.00
  4. Step 4: Simplify right side
    19,613.66x = 250,285,849.78
  5. Step 5: Solve for x
    x = 250,285,849.78/19,613.66
  6. Step 6: Final answer
    x = 12,760.80

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.