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Finding the Fourth Proportional to 12,791.54, 19,151.88 and 6,538.08

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Solution

The fourth proportional to 12,791.54, 19,151.88 and 6,538.08 is: 9,789.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,791.54 : 19,151.88 = 6,538.08 : x
  2. Step 2: Convert to fraction form
    12,791.54/19,151.88 = 6,538.08/x
  3. Step 3: Cross multiply
    12,791.54x = 19,151.88 × 6,538.08
  4. Step 4: Simplify right side
    12,791.54x = 125,216,538.78
  5. Step 5: Solve for x
    x = 125,216,538.78/12,791.54
  6. Step 6: Final answer
    x = 9,789.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.