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Finding the Fourth Proportional to 12,755.68, 19,128.96 and 4,433.68

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Solution

The fourth proportional to 12,755.68, 19,128.96 and 4,433.68 is: 6,648.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,755.68 : 19,128.96 = 4,433.68 : x
  2. Step 2: Convert to fraction form
    12,755.68/19,128.96 = 4,433.68/x
  3. Step 3: Cross multiply
    12,755.68x = 19,128.96 × 4,433.68
  4. Step 4: Simplify right side
    12,755.68x = 84,811,687.37
  5. Step 5: Solve for x
    x = 84,811,687.37/12,755.68
  6. Step 6: Final answer
    x = 6,648.94

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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.