Home / 20,133.58-30,205.78-6,985.96

Finding the Fourth Proportional to 20,133.58, 30,205.78 and 6,985.96

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Solution

The fourth proportional to 20,133.58, 30,205.78 and 6,985.96 is: 10,480.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,133.58 : 30,205.78 = 6,985.96 : x
  2. Step 2: Convert to fraction form
    20,133.58/30,205.78 = 6,985.96/x
  3. Step 3: Cross multiply
    20,133.58x = 30,205.78 × 6,985.96
  4. Step 4: Simplify right side
    20,133.58x = 211,016,370.85
  5. Step 5: Solve for x
    x = 211,016,370.85/20,133.58
  6. Step 6: Final answer
    x = 10,480.82

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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.