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Finding the Fourth Proportional to 13,672.68, 18,866.22 and 8,006.52

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Solution

The fourth proportional to 13,672.68, 18,866.22 and 8,006.52 is: 11,047.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,672.68 : 18,866.22 = 8,006.52 : x
  2. Step 2: Convert to fraction form
    13,672.68/18,866.22 = 8,006.52/x
  3. Step 3: Cross multiply
    13,672.68x = 18,866.22 × 8,006.52
  4. Step 4: Simplify right side
    13,672.68x = 151,052,767.75
  5. Step 5: Solve for x
    x = 151,052,767.75/13,672.68
  6. Step 6: Final answer
    x = 11,047.78

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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.