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Finding the Fourth Proportional to 12,791.77, 17,655.38 and 8,597.59

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Solution

The fourth proportional to 12,791.77, 17,655.38 and 8,597.59 is: 11,866.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,791.77 : 17,655.38 = 8,597.59 : x
  2. Step 2: Convert to fraction form
    12,791.77/17,655.38 = 8,597.59/x
  3. Step 3: Cross multiply
    12,791.77x = 17,655.38 × 8,597.59
  4. Step 4: Simplify right side
    12,791.77x = 151,793,718.53
  5. Step 5: Solve for x
    x = 151,793,718.53/12,791.77
  6. Step 6: Final answer
    x = 11,866.51

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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.