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Finding the Fourth Proportional to 12,751.23, 17,593.81 and 7,715.32

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Solution

The fourth proportional to 12,751.23, 17,593.81 and 7,715.32 is: 10,645.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,751.23 : 17,593.81 = 7,715.32 : x
  2. Step 2: Convert to fraction form
    12,751.23/17,593.81 = 7,715.32/x
  3. Step 3: Cross multiply
    12,751.23x = 17,593.81 × 7,715.32
  4. Step 4: Simplify right side
    12,751.23x = 135,741,854.88
  5. Step 5: Solve for x
    x = 135,741,854.88/12,751.23
  6. Step 6: Final answer
    x = 10,645.40

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.