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Finding the Fourth Proportional to 12,791.58, 17,601.21 and 9,806.28

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Solution

The fourth proportional to 12,791.58, 17,601.21 and 9,806.28 is: 13,493.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,791.58 : 17,601.21 = 9,806.28 : x
  2. Step 2: Convert to fraction form
    12,791.58/17,601.21 = 9,806.28/x
  3. Step 3: Cross multiply
    12,791.58x = 17,601.21 × 9,806.28
  4. Step 4: Simplify right side
    12,791.58x = 172,602,393.60
  5. Step 5: Solve for x
    x = 172,602,393.60/12,791.58
  6. Step 6: Final answer
    x = 13,493.44

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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.