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Finding the Fourth Proportional to 12,788.97, 17,654.22 and 8,599.65

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Solution

The fourth proportional to 12,788.97, 17,654.22 and 8,599.65 is: 11,871.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,788.97 : 17,654.22 = 8,599.65 : x
  2. Step 2: Convert to fraction form
    12,788.97/17,654.22 = 8,599.65/x
  3. Step 3: Cross multiply
    12,788.97x = 17,654.22 × 8,599.65
  4. Step 4: Simplify right side
    12,788.97x = 151,820,113.02
  5. Step 5: Solve for x
    x = 151,820,113.02/12,788.97
  6. Step 6: Final answer
    x = 11,871.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.