Home / 20,660.88-30,991.26-5,869.95

Finding the Fourth Proportional to 20,660.88, 30,991.26 and 5,869.95

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Solution

The fourth proportional to 20,660.88, 30,991.26 and 5,869.95 is: 8,804.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,660.88 : 30,991.26 = 5,869.95 : x
  2. Step 2: Convert to fraction form
    20,660.88/30,991.26 = 5,869.95/x
  3. Step 3: Cross multiply
    20,660.88x = 30,991.26 × 5,869.95
  4. Step 4: Simplify right side
    20,660.88x = 181,917,146.64
  5. Step 5: Solve for x
    x = 181,917,146.64/20,660.88
  6. Step 6: Final answer
    x = 8,804.91

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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.