Home / 12,679.38-17,497.21-7,014.36

Finding the Fourth Proportional to 12,679.38, 17,497.21 and 7,014.36

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Solution

The fourth proportional to 12,679.38, 17,497.21 and 7,014.36 is: 9,679.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,679.38 : 17,497.21 = 7,014.36 : x
  2. Step 2: Convert to fraction form
    12,679.38/17,497.21 = 7,014.36/x
  3. Step 3: Cross multiply
    12,679.38x = 17,497.21 × 7,014.36
  4. Step 4: Simplify right side
    12,679.38x = 122,731,729.94
  5. Step 5: Solve for x
    x = 122,731,729.94/12,679.38
  6. Step 6: Final answer
    x = 9,679.63

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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.