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Finding the Fourth Proportional to 12,751.44, 19,134.72 and 6,907.92

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Solution

The fourth proportional to 12,751.44, 19,134.72 and 6,907.92 is: 10,365.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,751.44 : 19,134.72 = 6,907.92 : x
  2. Step 2: Convert to fraction form
    12,751.44/19,134.72 = 6,907.92/x
  3. Step 3: Cross multiply
    12,751.44x = 19,134.72 × 6,907.92
  4. Step 4: Simplify right side
    12,751.44x = 132,181,114.98
  5. Step 5: Solve for x
    x = 132,181,114.98/12,751.44
  6. Step 6: Final answer
    x = 10,365.98

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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.