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Finding the Fourth Proportional to 23,643.86, 32,628.09 and 12,888.85

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Solution

The fourth proportional to 23,643.86, 32,628.09 and 12,888.85 is: 17,786.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,643.86 : 32,628.09 = 12,888.85 : x
  2. Step 2: Convert to fraction form
    23,643.86/32,628.09 = 12,888.85/x
  3. Step 3: Cross multiply
    23,643.86x = 32,628.09 × 12,888.85
  4. Step 4: Simplify right side
    23,643.86x = 420,538,493.35
  5. Step 5: Solve for x
    x = 420,538,493.35/23,643.86
  6. Step 6: Final answer
    x = 17,786.37

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