Home / 18,932.80-28,403.37-5,786.20

Finding the Fourth Proportional to 18,932.80, 28,403.37 and 5,786.20

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Solution

The fourth proportional to 18,932.80, 28,403.37 and 5,786.20 is: 8,680.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,932.80 : 28,403.37 = 5,786.20 : x
  2. Step 2: Convert to fraction form
    18,932.80/28,403.37 = 5,786.20/x
  3. Step 3: Cross multiply
    18,932.80x = 28,403.37 × 5,786.20
  4. Step 4: Simplify right side
    18,932.80x = 164,347,579.49
  5. Step 5: Solve for x
    x = 164,347,579.49/18,932.80
  6. Step 6: Final answer
    x = 8,680.57

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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.