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Finding the Fourth Proportional to 12,760.97, 17,608.73 and 7,656.22

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Solution

The fourth proportional to 12,760.97, 17,608.73 and 7,656.22 is: 10,564.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,760.97 : 17,608.73 = 7,656.22 : x
  2. Step 2: Convert to fraction form
    12,760.97/17,608.73 = 7,656.22/x
  3. Step 3: Cross multiply
    12,760.97x = 17,608.73 × 7,656.22
  4. Step 4: Simplify right side
    12,760.97x = 134,816,322.29
  5. Step 5: Solve for x
    x = 134,816,322.29/12,760.97
  6. Step 6: Final answer
    x = 10,564.74

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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.