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Finding the Fourth Proportional to 12,723.88, 17,558.96 and 7,755.88

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Solution

The fourth proportional to 12,723.88, 17,558.96 and 7,755.88 is: 10,703.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,723.88 : 17,558.96 = 7,755.88 : x
  2. Step 2: Convert to fraction form
    12,723.88/17,558.96 = 7,755.88/x
  3. Step 3: Cross multiply
    12,723.88x = 17,558.96 × 7,755.88
  4. Step 4: Simplify right side
    12,723.88x = 136,185,186.68
  5. Step 5: Solve for x
    x = 136,185,186.68/12,723.88
  6. Step 6: Final answer
    x = 10,703.12

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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.