Home / 20,321.32-30,482.52-9,789.70

Finding the Fourth Proportional to 20,321.32, 30,482.52 and 9,789.70

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Solution

The fourth proportional to 20,321.32, 30,482.52 and 9,789.70 is: 14,684.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,321.32 : 30,482.52 = 9,789.70 : x
  2. Step 2: Convert to fraction form
    20,321.32/30,482.52 = 9,789.70/x
  3. Step 3: Cross multiply
    20,321.32x = 30,482.52 × 9,789.70
  4. Step 4: Simplify right side
    20,321.32x = 298,414,726.04
  5. Step 5: Solve for x
    x = 298,414,726.04/20,321.32
  6. Step 6: Final answer
    x = 14,684.81

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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.