Home / 12,679.20-17,494.56-7,371.30

Finding the Fourth Proportional to 12,679.20, 17,494.56 and 7,371.30

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Solution

The fourth proportional to 12,679.20, 17,494.56 and 7,371.30 is: 10,170.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,679.20 : 17,494.56 = 7,371.30 : x
  2. Step 2: Convert to fraction form
    12,679.20/17,494.56 = 7,371.30/x
  3. Step 3: Cross multiply
    12,679.20x = 17,494.56 × 7,371.30
  4. Step 4: Simplify right side
    12,679.20x = 128,957,650.13
  5. Step 5: Solve for x
    x = 128,957,650.13/12,679.20
  6. Step 6: Final answer
    x = 10,170.80

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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.