Home / 20,660.45-30,980.54-6,616.86

Finding the Fourth Proportional to 20,660.45, 30,980.54 and 6,616.86

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Solution

The fourth proportional to 20,660.45, 30,980.54 and 6,616.86 is: 9,922.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,660.45 : 30,980.54 = 6,616.86 : x
  2. Step 2: Convert to fraction form
    20,660.45/30,980.54 = 6,616.86/x
  3. Step 3: Cross multiply
    20,660.45x = 30,980.54 × 6,616.86
  4. Step 4: Simplify right side
    20,660.45x = 204,993,862.82
  5. Step 5: Solve for x
    x = 204,993,862.82/20,660.45
  6. Step 6: Final answer
    x = 9,922.04

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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.