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Finding the Fourth Proportional to 12,723.38, 17,558.27 and 7,755.38

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Solution

The fourth proportional to 12,723.38, 17,558.27 and 7,755.38 is: 10,702.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,723.38 : 17,558.27 = 7,755.38 : x
  2. Step 2: Convert to fraction form
    12,723.38/17,558.27 = 7,755.38/x
  3. Step 3: Cross multiply
    12,723.38x = 17,558.27 × 7,755.38
  4. Step 4: Simplify right side
    12,723.38x = 136,171,055.99
  5. Step 5: Solve for x
    x = 136,171,055.99/12,723.38
  6. Step 6: Final answer
    x = 10,702.43

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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.