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Finding the Fourth Proportional to 12,723.63, 17,558.60 and 7,755.63

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Solution

The fourth proportional to 12,723.63, 17,558.60 and 7,755.63 is: 10,702.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,723.63 : 17,558.60 = 7,755.63 : x
  2. Step 2: Convert to fraction form
    12,723.63/17,558.60 = 7,755.63/x
  3. Step 3: Cross multiply
    12,723.63x = 17,558.60 × 7,755.63
  4. Step 4: Simplify right side
    12,723.63x = 136,178,004.92
  5. Step 5: Solve for x
    x = 136,178,004.92/12,723.63
  6. Step 6: Final answer
    x = 10,702.76

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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.