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Finding the Fourth Proportional to 11,888.61, 17,826.24 and 8,144.62

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Solution

The fourth proportional to 11,888.61, 17,826.24 and 8,144.62 is: 12,212.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,888.61 : 17,826.24 = 8,144.62 : x
  2. Step 2: Convert to fraction form
    11,888.61/17,826.24 = 8,144.62/x
  3. Step 3: Cross multiply
    11,888.61x = 17,826.24 × 8,144.62
  4. Step 4: Simplify right side
    11,888.61x = 145,187,936.81
  5. Step 5: Solve for x
    x = 145,187,936.81/11,888.61
  6. Step 6: Final answer
    x = 12,212.36

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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.