Home / 12,679.73-18,995.37-7,116.20

Finding the Fourth Proportional to 12,679.73, 18,995.37 and 7,116.20

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Solution

The fourth proportional to 12,679.73, 18,995.37 and 7,116.20 is: 10,660.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,679.73 : 18,995.37 = 7,116.20 : x
  2. Step 2: Convert to fraction form
    12,679.73/18,995.37 = 7,116.20/x
  3. Step 3: Cross multiply
    12,679.73x = 18,995.37 × 7,116.20
  4. Step 4: Simplify right side
    12,679.73x = 135,174,757.02
  5. Step 5: Solve for x
    x = 135,174,757.02/12,679.73
  6. Step 6: Final answer
    x = 10,660.70

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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.