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Finding the Fourth Proportional to 11,788.23, 17,693.98 and 8,659.45

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Solution

The fourth proportional to 11,788.23, 17,693.98 and 8,659.45 is: 12,997.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,788.23 : 17,693.98 = 8,659.45 : x
  2. Step 2: Convert to fraction form
    11,788.23/17,693.98 = 8,659.45/x
  3. Step 3: Cross multiply
    11,788.23x = 17,693.98 × 8,659.45
  4. Step 4: Simplify right side
    11,788.23x = 153,220,135.58
  5. Step 5: Solve for x
    x = 153,220,135.58/11,788.23
  6. Step 6: Final answer
    x = 12,997.72

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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.