Home / 20,660.77-30,993.96-7,516.90

Finding the Fourth Proportional to 20,660.77, 30,993.96 and 7,516.90

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Solution

The fourth proportional to 20,660.77, 30,993.96 and 7,516.90 is: 11,276.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,660.77 : 30,993.96 = 7,516.90 : x
  2. Step 2: Convert to fraction form
    20,660.77/30,993.96 = 7,516.90/x
  3. Step 3: Cross multiply
    20,660.77x = 30,993.96 × 7,516.90
  4. Step 4: Simplify right side
    20,660.77x = 232,978,497.92
  5. Step 5: Solve for x
    x = 232,978,497.92/20,660.77
  6. Step 6: Final answer
    x = 11,276.37

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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.