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Finding the Fourth Proportional to 12,679.65, 19,014.82 and 4,357.31

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Solution

The fourth proportional to 12,679.65, 19,014.82 and 4,357.31 is: 6,534.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,679.65 : 19,014.82 = 4,357.31 : x
  2. Step 2: Convert to fraction form
    12,679.65/19,014.82 = 4,357.31/x
  3. Step 3: Cross multiply
    12,679.65x = 19,014.82 × 4,357.31
  4. Step 4: Simplify right side
    12,679.65x = 82,853,359.37
  5. Step 5: Solve for x
    x = 82,853,359.37/12,679.65
  6. Step 6: Final answer
    x = 6,534.36

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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.